U.S. Route 171
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Maintained by Louisiana DOTD | ||
Length | 177.441 mi[1] (285.564 km) | |
Existed | 1926[2]–present | |
Tourist routes |
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Major junctions | ||
South end | ![]() ![]() | |
North end | ![]() ![]() ![]() LA 3094 in Shreveport | |
Location | ||
Country | United States | |
State | Louisiana | |
Parishes | Calcasieu, Beauregard, Vernon, Sabine, DeSoto, Caddo | |
Highway system | ||
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U.S. Highway 171 (US 171) is a part of the
As its designation indicates, US 171 is numbered as a spur of
US 171 was created as one of the original routes of the numbered U.S. Highway system in November 1926. Its only major alignment change occurred in 1937, when the highway was shifted from what is now
The route carries several honorary designations, primarily that of the Purple Heart Highway in tribute to all recipients of the
Route description
Lake Charles to Leesville
From the south, US 171 begins at a junction with
North of Moss Bluff, a rural area known as
Curving west into the
Leesville to Mansfield
In Leesville, US 171 becomes a busy commercial corridor again, initially traveling along 5th Street's narrow four-lane right-of-way. Another one-way pair is then utilized as the parallel 6th Street begins to carry southbound traffic. In the center of town, three state highway junctions are encountered in the space of a few blocks:
US 171 enters
After crossing over the KCS Railway at Noble, US 171 curves back to the north and intersects
Shreveport metropolitan area
As it enters the
US 171 enters Shreveport on Mansfield Road and retains its wide median as it becomes a heavily traveled commercial corridor once again. The highway has junctions with
Proceeding northward, US 171 crosses over the UPRR line for the final time and intersects
Route classification and data
US 171 carries at least four lanes of traffic for its entire length. It alternates between a rural and urban principal arterial over the course of its route, as determined by the Louisiana Department of Transportation and Development (La DOTD). Daily traffic volume in 2013 peaked at 37,700 vehicles in Shreveport and 29,800 in Lake Charles. The lowest figure reported was 2,200 vehicles north of Hornbeck in southern Sabine Parish.[17] The posted speed limit ranges from 65 mph (105 km/h) throughout most divided rural stretches to as low as 35 mph (55 km/h) within some corporate limits.[5]
Since 2003, virtually the entire route of US 171 has been officially designated as the Purple Heart Highway in recognition of all Purple Heart recipients. The only exceptions are the portion from its southern starting point in Lake Charles to central Moses Bluff, named in 1982 for Martin Luther King Jr., and another in Rosepine named for its former mayor Johnnie B. Hall in 1997.[18] Decades earlier, two markers were installed on US 171 identifying it as a Blue Star Memorial Highway as "a tribute to the Armed Forces that have defended the United States of America." The first was dedicated on March 17, 1957 at the roadside park in Ragley. The second was dedicated on November 11, 1964 at the intersection with Washington Street in DeRidder.[19]
Additionally, a 16.7-mile (26.9 km) stretch of US 171, extending from LA 26 south of DeRidder to LA 10 south of Leesville, serves as part of the
History
Original route and early improvements
US 171 was designated in November 1926 as one of the original routes of the
Upon its designation in 1926, US 171 was generally a gravel road outside the city of Shreveport.[22] By the summer of 1932, however, the entire highway was paved with two lanes of concrete aside from the Many–Mansfield section.[25] Instead, the modern alignment via Zwolle, which was also the northern portion of Route 42 prior to 1955, was being straightened and paved to serve as US 171. The revised route also received two grade separations with the Kansas City Southern Railway line that were constructed in 1934.[26][27] These consisted of an overpass at Noble and an underpass at Trenton, about four miles (6.4 km) south of Mansfield. Completed at the end of 1937,[28][29] this would be the only major alignment change in the highway's history and the only instance in which the paved alignment significantly differed from the established gravel road. Minor deviations, mostly near the highway's southern end, included a diagonal cutoff that bypassed a section line road zigzag running northwest from Gillis[d] and the straightening of the route through Longville.[e]
During the mid- to late 1930s, six additional grade separations were constructed elsewhere along US 171, eliminating nearly every railroad crossing along the route. The first was an overpass of the now abandoned
Urban improvements and initial widening projects
The next burst of activity in improving US 171 occurred in Caddo Parish, where the entirety of Mansfield Road from the DeSoto Parish line to LA 511 in Shreveport was reconstructed and straightened beginning in 1951.[36] Several sections of the original roadway still exist as local roads, now re-named as Old Mansfield Road, that weave in and out of the current alignment. Additionally, the portion from Southland Park Drive to Jewella Avenue now serves as a frontage road to the modern route. The project was completed in 1954 at a cost of $1,921,000.[37][38] The new alignment also included an underpass of the Texas and New Orleans Railroad line at Keithville, replacing the grade crossing there. In 1959, the final alignment change in Shreveport had US 171 transition from Mansfield Road onto Hearne Avenue to reach its northern terminus, giving the highway its first section of four-lane pavement.[39][40] Around 1965, two additional lanes were built on Mansfield Road extending south to LA 526. This was roughly concurrent with the opening of the I-20 interchange on Hearne Avenue, connecting US 171 with the new expressway through Downtown Shreveport and improving access to the US 80 corridor east of the city.[41][42] The highway was then widened southward through the Keithville area in 1967, making US 171 four lanes throughout both the city of Shreveport and Caddo Parish.[42][43]
The opposite end of US 171 received its first section of four-lane pavement in the early 1960s when the roadway was widened in Lake Charles between the southern terminus at US 90 (Broad Street) and Fruge Street.
Two further improvements during the 1960s involved new bridges along the route. The first was a replacement of the Anacoco Creek bridge in 1967 with a higher span.[46] This was necessitated by an impoundment of the creek four years earlier that created the recreational Vernon Lake.[47] A more substantial project completed in 1969 overhauled the two most significant water crossings on US 171, the English Bayou and Calcasieu River bridges between Lake Charles and Moss Bluff. The original narrow two-lane spans dating from the 1920s were replaced with four-lane spans on a new four-lane alignment further west.[43][48] (Though the bridges were demolished in 1973, the land portions of the route still exist as Old US 171, partially as local roads leading to public boat launches and partially on private property.) In 1972, the remaining gap in the four-lane alignment in Lake Charles between Fruge Street and the new bridge approach was widened. Central to this project was the twinning of the railroad overpass south of I-10.[49][50]
Completing the four-lane highway
Since the 1970s, construction projects on US 171 have mainly focused on completing the highway to four-lane capacity throughout its entire length. This was cited by commercial and political interests as crucial for the economic development of the corridor and a necessary step in preventing the loss of economic opportunities to the
The above projects left two long segments of two-lane pavement remaining on US 171, extending from Moss Bluff to DeRidder and from Anacoco to Gloster. The widening of these mostly rural stretches was eventually accomplished as a major component of the Transportation Infrastructure Model for Economic Development program. Approved by the
However, more significant changes were carried out in a few locations. A new route through Many bypassed the downtown area, discontinuing the concurrency with LA 6.[12][65][i] The neighboring town of Zwolle was bypassed altogether with a new alignment constructed around its northeast side. In this case, the old route through town was retained as US 171 Bus., which was designated in 2008.[66] The route through Mansfield was also streamlined via the widening and extension of Jenkins Street, which benefitted the concurrent US 84 as well. Here, the original four-lane section of Washington Avenue was retained as US 84 Bus.[14][64][j] These improvements eliminated all but one right-angle turn along the entirety of US 171, located in the center of DeRidder. Finally, the two-lane railroad underpass at Trenton was replaced by a twin-span overpass located about 1.5 miles (2.4 km) to the south.[14][64] The old crossing remains in service as a local road called Old US 171 or Trenton Road.[5] After a total expenditure of $650 million, US 171 was completed as a four-lane highway when a 6.6-mile (10.6 km) section between Florien and Many was opened to traffic in July 2010.[63][67]
The latest improvement to US 171 involved the installation of a roundabout at the northern end of Leesville. It was the first roundabout to be constructed in the seven parishes forming the state highway department's District No. 8.[68] Located at the junction with eastbound LA 8/LA 28, the junction was previously a signalized T-intersection that was the site of numerous accidents and frequent traffic pileups. Construction began in October 2010, and the project was completed with a ribbon-cutting by Governor Bobby Jindal on August 5, 2011 after an expenditure of $2.1 million.[69]
Major intersections
Parish | Location | mi[1] | km | Destinations | Notes |
---|---|---|---|---|---|
Southern terminus of US 171; western terminus of LA 14 | |||||
0.509 | 0.819 | ![]() ![]() ![]() ![]() ![]() I-10 west | Western terminus of LA 3020 | ||
0.622– 0.998 | 1.001– 1.606 | ![]() | Exit 33 on I-10; no access from US 171 north to I-10 west | ||
2.467– 2.654 | 3.970– 4.271 | Bridge over English Bayou | |||
| 2.873 | 4.624 | ![]() ![]() LA 3059 east (Old Town Road) | Western terminus of LA 3059 | |
Moss Bluff | 3.362– 4.448 | 5.411– 7.158 | Bridge over Calcasieu River | ||
4.720 | 7.596 | ![]() ![]() LA 378 west (Sam Houston Jones Parkway) – Westlake | Northeastern terminus of LA 378; to Sam Houston Jones State Park | ||
Interchange; southern end of US 190 concurrency; eastern terminus of LA 12 | |||||
LA 110 west – Singer, Merryville | Eastern terminus of LA 110 | ||||
| 39.075 | 62.885 | ![]() ![]() LA 394 east – Bundick Lake, Dry Creek | Western terminus of LA 394 | |
| 41.759– 41.850 | 67.205– 67.351 | ![]() ![]() | Western terminus of LA 26 | |
| 43.270 | 69.636 | ![]() ![]() | Western terminus of LA 112 | |
US 190 west (Shirley Street, West 1st Street) – Merryville ![]() ![]() | Northern end of US 190 concurrency (one-way pair); northern terminus of LA 27; to Beauregard Regional Airport | ||||
US 190 west | Eastern terminus of LA 3226 | ||||
LA 1146 east (Ikes Road) | Western terminus of LA 1146 | ||||
Pickering | 58.426 | 94.028 | ![]() ![]() | Western terminus of LA 10; to Fort Johnson South Gates | |
LA 1211 south (Vernon Street) | Northern terminus of LA 1211 | ||||
LA 467 south (University Parkway) | Northern terminus of LA 467; to Northwestern State University at Fort Johnson | ||||
66.391 | 106.846 | ![]() ![]() LA 468 east (East Lula Street) – Leesville Business District | Western terminus of LA 468 | ||
66.485 | 106.997 | ![]() ![]() ![]() | Southern end of LA 8 concurrency; to Leesville Airport | ||
67.217– 67.317 | 108.175– 108.336 | ![]() ![]() LA 1213 north (Kurthwood Road) | Southern terminus of LA 1213 | ||
67.622– 67.761 | 108.827– 109.051 | ![]() ![]() ![]() ![]() | Roundabout; northern end of LA 8 concurrency; western terminus of LA 28 | ||
Toledo Bend Dam | |||||
LA 392 (Port Arthur Avenue) | To South Toledo Bend State Park | ||||
LA 474 west (West Port Arthur Avenue) | Eastern terminus of LA 474 | ||||
92.553 | 148.950 | ![]() ![]() LA 118 east (Louisiana Maneuvers Highway) – Kisatchie | Western terminus of LA 118 | ||
Many | 100.950 | 162.463 | ![]() | ||
101.922 | 164.028 | ![]() ![]() LA 175 north – Belmont, Pleasant Hill | Southern terminus of LA 175 | ||
| 109.838 | 176.767 | ![]() ![]() ![]() US 171 Bus. north (North Main Street) – Zwolle, Toledo Bend | Southern terminus of US 171 Bus.; to North Toledo Bend State Park | |
LA 1216 east (Gay Street) | Western terminus of LA 1216 | ||||
110.982 | 178.608 | ![]() ![]() | Western terminus of LA 120 | ||
112.543 | 181.120 | ![]() ![]() ![]() US 171 Bus. south (Obrie Street) – Zwolle, Toledo Bend | Northern terminus of US 171 Bus.; to North Toledo Bend State Park | ||
LA 1218 west | Eastern terminus of LA 1218 | ||||
116.146 | 186.919 | ![]() ![]() LA 483 north | Southern terminus of LA 483 | ||
LA 174 (Port Arthur Avenue) – Pleasant Hill | |||||
LA 512 east | Western terminus of LA 512 | ||||
US 84 west / US 84 Bus. east (Washington Avenue) – Logansport | Southern end of US 84 concurrency; western terminus of US 84 Bus. | ||||
141.556 | 227.812 | ![]() ![]() ![]() ![]() I-49 – Coushatta | Northern end of US 84 concurrency; to Mansfield SCA Civil War Area and Mansfield Female College Museum | ||
LA 3015 (Holly Street, Shelby Street) – Longstreet | |||||
Gloster | 156.340 | 251.605 | ![]() | Location also known as Kickapoo | |
I-49 | Western terminus of LA 3276 | ||||
![]() I-69 | Proposed; Future I-69 in Louisiana | ||||
LA 525 south (Colquitt Road) – Spring Ridge | Northern terminus of LA 525 | ||||
171.380– 171.428 | 275.809– 275.887 | ![]() LA 526 (Bert Kouns Industrial Loop Expressway) | |||
172.562– 172.843 | 277.712– 278.164 | ![]() | Exits 4 (eastbound) and 5 (westbound) on LA 3132 | ||
174.567– 174.575 | 280.938– 280.951 | ![]() LA 511 (West 70th Street) | |||
177.063– 177.203 | 284.955– 285.181 | ![]() Dallas | Exit 16A on I-20 | ||
177.441 | 285.564 | ![]() ![]() US 71 / LA 1 north | Northern terminus of US 171; southern terminus of LA 3094 | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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Business route
Location | Zwolle |
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Length | 3.112 mi[1] (5.008 km) |
Existed | 2008[66]–present |
U.S. Highway 171 Business (US 171 Bus.) runs 3.11 miles (5.01 km) in a general north–south direction through Zwolle, a town in Sabine Parish.[1] It follows the original two-lane route of US 171 before the completion of a four-lane bypass in 2008.[66]
From the southeast, US 171 Bus. begins at a junction with mainline US 171 just east of the Zwolle corporate limits. The route heads west into town on North Main Street alongside the
US 171 Bus. is classified as a rural principal arterial by the Louisiana Department of Transportation and Development (La DOTD). The average daily traffic volume in 2013 ranged from 4,200 to 6,000 vehicles.[17] The posted speed limit ranges from 35 mph (55 km/h) through the center of town to 45 mph (70 km/h) near the junctions with mainline US 171 at either end of the route.[70]
Major intersections
The entire highway is in Sabine Parish.
Location | mi[1] | km | Destinations | Notes | |
---|---|---|---|---|---|
| 0.000– 0.016 | 0.000– 0.026 | ![]() | Southern terminus | |
LA 475 south (Obrie Street) | Northern terminus of LA 475; to North Toledo Bend State Park | ||||
3.098– 3.112 | 4.986– 5.008 | ![]() | Northern terminus | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi |
See also
- U.S. Roads portal
Notes
- ^ For the federal government's purposes, US 171 is listed at 179 miles (288 km) in the official U.S. Route Number Database.[3]
- LA 3020.
- ^ Signage at the Vernon Lake bridge identifies the waterway as Anacoco Creek, which was impounded in 1963 to create the lake.
- ^ The original route through the Gillis area followed what is now Gillis Cutoff and North Perkins Ferry Road. This route remained for a time in the pre-1955 state highway system as State Route 42-E. The suffix indicated a former alignment of Route 42, the state highway counterpart to US 171.
- ^ Only part of the original alignment through Longville survives as a local road named Cedar Street.
- ^ The Texas and Pacific line through Grand Cane has since been abandoned, while the crossings at Lake Charles, Ragley (formerly identified as Fulton), and Shreveport are now operated by the Union Pacific Railroad.
- ^ The official Louisiana highway maps did not show the new terminus of US 171 until 1971, but contemporary photographs show that the signage had indeed been changed.
- ^ Since 1937, US 171 had traveled north on Jenkins Street, east on McEnery Street, and north on Washington Avenue to Polk Street in Mansfield.
- ^ US 171 formerly travelled north on Fisher Road and Church Street, west on San Antonio Avenue with LA 6 through the Many business district, and north on Shreveport Highway to rejoin the current alignment.
- ^ North of Polk Street, US 171 formerly proceeded north on Washington Avenue, west and north on Oak Street, and west on Hope Street to rejoin the current alignment out of Mansfield.
References
- ^ a b c d e f Louisiana Department of Transportation and Development, Highway Inventory Unit (2016). "LRS Conversion Tool". Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ .
- ^ "U.S. Route Number Database". American Association of State Highway and Transportation Officials. December 2009. Retrieved January 7, 2017.
- ^ "Road Closure: LA 397 (E. Ward Line Road) – Lake Charles - Calcasieu Parish". Louisiana Department of Transportation and Development. 2019-11-08. Retrieved 2020-09-19.
Motorist will be detoured via US 90 (Fruge St), LA 14 (S. Martin Luther King Hwy) and LA 3020 (Opelousas St)
- ^ a b c d e f g h i j k l Google (August 24, 2017). "Overview Map of US 171" (Map). Google Maps. Google. Retrieved August 24, 2017.
- ^ a b Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Calcasieu Parish (East Section) (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b c Louisiana Department of Transportation and Development, Office of Multimodal Planning (July 2012). District 07: Official Control Section Map, Construction and Maintenance (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Beauregard Parish (East Section) (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Vernon Parish (West Section) (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b c d Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). District 08: Official Control Section Map, Construction and Maintenance (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Sabine Parish (South Section) (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b c Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Sabine Parish (North Section) (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). DeSoto Parish (East Section) (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b c d Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). DeSoto Parish (West Section) (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b c d Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). District 04: Official Control Section Map, Construction and Maintenance (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b c Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Caddo Parish (South Section) (PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved August 23, 2017.
- ^ a b "La DOTD GIS". Louisiana Department of Transportation and Development. 2013. Archived from the original on October 16, 2013. Retrieved July 25, 2013.
- ^ Louisiana Department of Transportation and Development, Office of Multimodal Planning (December 2015). Louisiana Memorial Highways (PDF) (Map). Louisiana Department of Transportation and Development. Retrieved August 25, 2017.
- ^ "Louisiana Blue Star Markers" (PDF). Louisiana Garden Club Federation. July 2015. Retrieved September 11, 2017.
- Louisiana Scenic Byways. 2017. Retrieved August 24, 2017.
- ^ United States Numbered Highways, Selected by American Association of State Highway Officials, Approved by United States Department of Agriculture. American Association of State Highway Officials. 1927. p. 26.
- ^ Clason Map Company(1927). Mileage Map of the Best Roads of Louisiana (Map). Clason Map Company.
- ^ "Act No. 95, House Bill No. 206". State-Times. Baton Rouge. November 29, 1921. p. 9.
- Louisiana Department of Highways(July 1, 1955). Louisiana Highways: Interim Road Map (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
- ^ Rand McNally (1932). Texaco Road Map: Arkansas/Louisiana/Mississippi (Map) (Summer ed.). Texaco.
- ^ "Special Notices: Highway Acceptance". The New Orleans Item. New Orleans. June 12, 1934. p. 18.
- ^ "Special Notices: Highway Acceptances". The New Orleans Item. New Orleans. October 2, 1934. p. 19.
- ^ Rand McNally (September 1937). Texaco Touring Map: Arkansas/Louisiana/Mississippi and Kentucky/Tennessee (Map). Texaco.
- ^ "Special Notices: Highway Acceptances". The New Orleans Item. New Orleans. December 7, 1937. p. 18.
- ^ "Highway Board Accepts Complete Rail Overpass". The New Orleans Item. New Orleans. November 9, 1934. p. 3.
- ^ "Federal and State Governments Move to Check Deaths at Louisiana Crossings: 23 Louisiana Rail-Highway Crossing Projects Under Contract; 36 Completed". The Times-Picayune New Orleans States. New Orleans. September 20, 1936. sec. 2, p. 4.
- ^ "Special Notices: Highway Acceptances". The New Orleans Item. New Orleans. August 24, 1937. p. 16.
- ^ "Special Notices: Highway Acceptances". The New Orleans Item. New Orleans. October 5, 1937. p. 18.
- ^ "Special Notices: Highway Acceptances". The New Orleans Item. New Orleans. December 14, 1937. p. 22.
- ^ "Special Notices: Highway Acceptances". The New Orleans Item. New Orleans. January 10, 1939. p. 16.
- ^ "Views on Sundry Topics: Road Building Delays". The Times-Picayune. New Orleans. August 8, 1951. p. 10.
- ^ "Millions Spent on Road System". The Times-Picayune New Orleans States. New Orleans. January 25, 1953. sec. 12, p. 14.
- ^ "Shreveport Improves Traffic Flow". The New Orleans Item. New Orleans. March 8, 1954. p. 30.
- ^ "City Road Work Given 3 Months". The Shreveport Times. Shreveport. January 6, 1959. p. 5B.
- ^ a b Louisiana Department of Highways (December 1960). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
- ^ a b c d e Louisiana Department of Highways (June 1, 1963). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
- ^ a b c d Louisiana Department of Highways (1966). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
- ^ a b Louisiana Department of Highways (1968). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
- ^ "Lake Charles Expressway Dedication Set". State-Times. Baton Rouge. April 2, 1963. p. 7B.
- ^ "Dedication Set for Major Link in Interstate 10". Morning Advocate. Baton Rouge. February 15, 1964. p. 9A.
- ^ "National Bridge Inventory Data: US0171 Over Vernon Lake". Ugly Bridges. 2014. Retrieved September 12, 2017.
- ^ "Vernon Lake: Lake History and Management Issues" (PDF). Part VI-A: Waterbody Management Plan Series. Louisiana Department of Wildlife and Fisheries, Office of Fisheries, Inland Fisheries Section. 2017. Retrieved September 10, 2017.
- ^ Louisiana Department of Highways (1970). Louisiana 1970 (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
- ^ Louisiana Department of Highways (1971). Louisiana 1971 (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
- ^ "National Bridge Inventory Data: US0171 Over Sou Pacific RR". Ugly Bridges. 2015. Retrieved September 12, 2017.
- ^ "National Bridge Inventory Data: US0171 Over Sales Branch". Ugly Bridges. 2016. Retrieved September 12, 2017.
- ^ Louisiana Department of Highways (1976). Louisiana 1976 (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
- ^ "National Bridge Inventory Data: US0171 Over Castor Creek Relief". Ugly Bridges. 2016. Retrieved September 12, 2017.
- ^ a b Louisiana Department of Transportation and Development—Office of Highways (1979). Louisiana 1979–1980 (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development.
- ^ "National Bridge Inventory Data: US0171 Over Flat Creek". Ugly Bridges. 2016. Retrieved September 12, 2017.
- ^ a b c d Louisiana Department of Transportation and Development (1981). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development.
- ^ a b Louisiana Department of Transportation and Development (1983). Louisiana: A Dream State (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development.
- ^ "National Bridge Inventory Data: US0171 Over Prairie Creek". Ugly Bridges. 2014. Retrieved September 12, 2017.
- ^ Louisiana Department of Transportation and Development (1986). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development.
- ^ "DOTD TIMED Program Recognized by American Road and Transportation Builders Association for Innovation". Louisiana Department of Transportation and Development. November 19, 2013. Retrieved June 27, 2016.
- ^ Anderson, Ed (August 16, 2002). "Roadwork Headed for Fast Lane: Commission OKs Issuance of Bonds". The Times-Picayune. New Orleans. p. 2.
- ^ Barkley, Ben (January 19, 2002). "Smith Urges for Completion of U.S. 171 Project". The Leesville Daily Leader. Leesville. p. 1.
- ^ a b "Officially Complete – Ribbon Cutting Signifies End of U.S. 171 Four-laning Project". The Leesville Daily Leader. Leesville. July 16, 2010. p. 1.
- ^ a b c Louisiana Department of Transportation and Development, Office of Planning and Programming (1999). DeSoto Parish (Map) (2001 ed.). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development.
- ^ Louisiana Department of Transportation and Development, Office of Planning and Programming (1995). Sabine Parish (North Section) (Map) (1997 ed.). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development.
- ^ a b c Special Committee on U.S. Route Numbering (May 4, 2008). "Special Committee on US Route Numbering Decisions" (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (MHT) on October 16, 2017. Retrieved September 12, 2017.
- ^ "DOTD Lauds Opening of U.S. 171 Corridor in Western Louisiana". Beauregard Daily News. DeRidder. July 15, 2010. pp. 1, 4.
- ^ Sharp, Tammy (October 27, 2010). "Officials Break Ground on Roundabout". The Leesville Daily Leader. Leesville. pp. 1–2.
- ^ Kunkle, Alix (August 7, 2011). "Roundabout – Leesville Traffic Circle Officially Opened". The Leesville Daily Leader. Leesville. p. 1A.
- ^ a b Google (August 24, 2017). "Overview Map of US 171 Business" (Map). Google Maps. Google. Retrieved August 24, 2017.
External links
Media related to U.S. Route 171 at Wikimedia Commons
- Maps / GIS Data Homepage, Louisiana Department of Transportation and Development