Total Bridges
12,699
Public highway bridges in Louisiana
State profile · Above national median SD
Louisiana bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Louisiana — drawn straight from the FHWA National Bridge Inventory.
- 12,699
- Public bridges
- 36.2%
- Good condition
- 11.0%
- Poor condition
- 11.0%
- Structurally deficient
Good Condition
36.2%
4,603 bridges rated 7-9
-13.8pp vs 50% benchmark
Poor Condition
11.0%
1,397 bridges rated 0-4
Structurally Deficient
11.0%
1,397 bridges flagged for repair priority
4.0pp vs national avg 7.0%
Louisiana vs national bridge condition
Louisiana — Good condition share 36.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana — Structurally deficient share 36.7%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Louisiana (FHWA NBI)
Counties (64)
Acadia 282 Allen 178 Ascension 216 Assumption 68 Avoyelles 147 Beauregard 221 Bienville 190 Bossier 270 Caddo 682 Calcasieu 463 Caldwell 124 Cameron 58 Catahoula 70 Claiborne 148 Concordia 42 De Soto 201 East Baton Rouge 548 East Carroll 55 East Feliciana 133 Evangeline 156 Franklin 131 Grant 209 Iberia 143 Iberville 80 Jackson 163 Jefferson 379 Jefferson Davis 240 LaSalle 195 Lafayette 323 Lafourche 130 Lincoln 171 Livingston 253 Madison 104 Morehouse 136 Natchitoches 313 Orleans 382 Ouachita 337 Plaquemines 34 Pointe Coupee 50 Rapides 523 Red River 63 Richland 207 Sabine 195 St. Bernard 47 St. Charles 82 St. Helena 139 St. James 26 St. John the Baptist 40 St. Landry 317 St. Martin 116 St. Mary 124 St. Tammany 360 Tangipahoa 477 Tensas 52 Terrebonne 215 Union 121 Vermilion 261 Vernon 341 Washington 285 Webster 194 West Baton Rouge 73 West Carroll 88 West Feliciana 108 Winn 220
Louisiana vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Louisiana on the same metric.
42
Pennsylvania
10.50% top marginal rate
38
North Dakota
10.84% top marginal rate
22
Louisiana
11.00% top marginal rate
72
Puerto Rico
11.98% top marginal rate
23
Maine
13.23% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by composite NBI rating. Each is inspected at least every 24 months.
Layton Coco Xing
Structurally DeficientOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1986 Load: 0.9 t ADT: 40
LA1077
Structurally DeficientOver: BLACK BAYOU
1.1 M S OF LA 22, St. Tammany, LA
Built 1965 Load: 0.9 t ADT: 1,019
LA0308
Structurally DeficientOver: BAYOU LAFOURCHE
.01 MI NORTH OF LA 1, Lafourche, LA
Built 1970 Load: 1.0 t ADT: 5,198
Ebeneezer Tap Rd
PoorOver: JONES CREEK
0.65 Mi South of LA 500, LaSalle, LA
Built 1989 Load: 1.2 t ADT: 300
Anderson Rd
Structurally DeficientOver: HYDE BR.
2 MI S OF 1054 & 440, Tangipahoa, LA
Built 1960 Load: 1.2 t ADT: 25
Stubblefield Rd
PoorOver: BAYOU ROUGE
APPROX. 1 M. S. OF LA 361, Avoyelles, LA
Built 1975 Load: 2.3 t ADT: 40
All Bridges in Louisiana
LA0070
GoodOver: DRAIN
3.1 M NE of LA 1&LA 70, Assumption, LA
Built 1977 Load: 32.4 t ADT: 11,166
LA0070
GoodOver: SEATRA CANAL
3.3 M SW of LA 70&LA 3127, Assumption, LA
Built 1977 Load: 32.4 t ADT: 11,166
LA0070
GoodOver: DRAIN
3.26 MI. NE OF LA 70 SPUR, Assumption, LA
Built 1977 Load: 32.4 t ADT: 11,166
LA0070
GoodOver: DRAIN
0.8 M SW of LA 70&LA 3127, Assumption, LA
Built 1977 Load: 32.4 t ADT: 11,166
LA0070-S
GoodOver: DRAIN
0.3 M SW of LA 70&LA 3127, Assumption, LA
Built 1977 Load: 32.4 t ADT: 11,166
Schexnyder Rd
GoodOver: DRAINAGE DITCH
0.2 MI. SOUTH OF NORMAND, Avoyelles, LA
Built 2013 Load: 32.4 t ADT: 267
Johnson Rd
GoodOver: JOHNSON BAYOU
0.08 MI. NORTH OF LA 1192, Avoyelles, LA
Built 2009 Load: 32.4 t ADT: 400
Saint Jean St
GoodOver: BAYOU LACOMBE
0.01 MI. NORTH OF LA 114, Avoyelles, LA
Built 2010 Load: 32.4 t ADT: 70
LA0107
GoodOver: CREEK
1 M NW S END MONCLA BR., Avoyelles, LA
Built 2000 Load: 32.4 t ADT: 3,354
LA0001
GoodOver: BAYOU PEROT
1.71 MI. SOUTH OF LA 1191, Avoyelles, LA
Built 1970 Load: 32.4 t ADT: 10,795
LA0001
GoodOver: BAYOU LACOMBE
6.43 MILES NORTH OF LA 11, Avoyelles, LA
Built 1972 Load: 32.4 t ADT: 6,294
LA1182
GoodOver: BAYOU CHOUPIQUE CANAL
1.5 MI. NE OF LA 107, Avoyelles, LA
Built 1991 Load: 32.4 t ADT: 1,534
LA1192
GoodOver: JOHNSON CANAL
3.63 MI. N OF N JCT LA 10, Avoyelles, LA
Built 2004 Load: 32.4 t ADT: 476
Lanson Bordelon Rd
GoodOver: OLD RIVER
0.1 MI. EAST OF LA 115, Avoyelles, LA
Built 1998 Load: 32.4 t ADT: 20
Scroggs Rd
GoodOver: DRAINAGE CREEK
2 MI NW OF LA 107, Avoyelles, LA
Built 1989 Load: 32.4 t ADT: 300
US0190
GoodOver: BARNES CREEK
4.9 MI E of US 171, Beauregard, LA
Built 1990 Load: 32.4 t ADT: 3,263
US0190
GoodOver: BARNES CREEK RELIEF
6.0 MI E of US 171, Beauregard, LA
Built 1990 Load: 32.4 t ADT: 3,263
LA0026
GoodOver: DRY BRANCH
1.0 M E of LA 1147, Beauregard, LA
Built 1987 Load: 32.4 t ADT: 2,596
LA0027
GoodOver: DITCH
0.6 MI S OF US 190, Beauregard, LA
Built 1988 Load: 32.4 t ADT: 4,405
LA0110
GoodOver: DRAIN
5.1 M E OF US190, Beauregard, LA
Built 1959 Load: 32.4 t ADT: 1,947
LA0110
GoodOver: DRAIN
7.1 M E OF LA 27, Beauregard, LA
Built 1961 Load: 32.4 t ADT: 2,079
LA0004
GoodOver: SALINE BAYOU RELIEF 1
1.4 MI. EAST OF LA 9, Bienville, LA
Built 2010 Load: 32.4 t ADT: 504
LA0009
GoodOver: OTTER CREEK
0.85 MILES S OF LA 155, Bienville, LA
Built 2012 Load: 32.4 t ADT: 1,131
LA0009
GoodOver: DRAIN
.51 M S OF LA 147, Bienville, LA
Built 2012 Load: 32.4 t ADT: 1,108
Grover Jones Rd
GoodOver: TRIB TO BLACK LAKE CREEK
1.94 MI SOUTHEAST OF US 8, Bienville, LA
Built 2013 Load: 32.4 t ADT: 150
Carr Rd
GoodOver: MILEY CREEK
3.2 MI. SOUTHWEST OF LA 9, Bienville, LA
Built 2000 Load: 32.4 t ADT: 100
US0080
GoodOver: MACKS BAYOU
0.01 MI W. OF LA 782-2, Bossier, LA
Built 2014 Load: 32.4 t ADT: 15,627
LA0003
GoodOver: UNION PACIFIC RAILROAD
0.95 MI. NORTH OF LA 162, Bossier, LA
Built 2015 Load: 32.4 t ADT: 1,979
LA0157
GoodOver: BOUNDS BRANCH
1.42 MI. N. OF LA 160, Bossier, LA
Built 2015 Load: 32.4 t ADT: 176
PLANTATION DR
GoodOver: DRAIN
0.5 MI NE OF LA 3105, Bossier, LA
Built 2018 Load: 32.4 t ADT: 200
LA0072
GoodOver: COOPERS BAYOU
0.2 MI EAST OF LA 185, Bossier, LA
Built 1958 Load: 32.4 t ADT: 12,394
I0020
GoodOver: DRAIN
6.2 MI EAST OF LA 782-2, Bossier, LA
Built 1975 Load: 32.4 t ADT: 62,470
I0020
GoodOver: CANEY BRANCH
2.8 MI EAST OF US 80, Bossier, LA
Built 1975 Load: 32.4 t ADT: 25,379
I0220
GoodOver: BENOIT BAYOU
1.0 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.4 t ADT: 35,972
I0220
GoodOver: BENOIT BAYOU
1.0 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.4 t ADT: 35,972
LA3105
GoodOver: DRAIN
1.4M NORTH OF I-20, Bossier, LA
Built 1992 Load: 32.4 t ADT: 32,603
Sunflower Rd
GoodOver: MACKS BAYOU
0.4 MI WEST OF US 71, Bossier, LA
Built 1998 Load: 32.4 t ADT: 1,892
Hickory Ridge
GoodOver: MACKS BAYOU
0.1M NORTH OF SHED RD, Bossier, LA
Built 1994 Load: 32.4 t ADT: 1,596
Merritt Rd
GoodOver: White Oak Branch
0.4 MI. W. OF CROUCH RD., Bossier, LA
Built 2006 Load: 32.4 t ADT: 125
Carterville Rd
GoodOver: Boggs Creek Trib
3.0 MILES N OF LA 157, Bossier, LA
Built 1998 Load: 32.4 t ADT: 200
Chalybeate Rd
GoodOver: Martin Creek Trib
4.0 MI N OF LA 157, Bossier, LA
Built 1998 Load: 32.4 t ADT: 100
I0220
GoodOver: MCCAIN CREEK
0.83 MI SW OF US 71, Caddo, LA
Built 2010 Load: 32.4 t ADT: 42,148
LA0511
GoodOver: CREEK
0.7 MILES EAST OF LA 526, Caddo, LA
Built 2011 Load: 32.4 t ADT: 21,080
US0071
GoodOver: DOE SLOUGH CANAL
1.07 MI SOUTH OF LA 173, Caddo, LA
Built 2012 Load: 32.4 t ADT: 786
I0049
GoodOver: DRAIN
2.41 MI S. OF LA 173, Caddo, LA
Built 2013 Load: 32.4 t ADT: 6,846
I0049
GoodOver: COTTONWOOD BAYOU
0.63 M. N. OF LA 173, Caddo, LA
Built 2013 Load: 32.4 t ADT: 29,542
I0049
GoodOver: DRAIN
0.60 M. N. OF LA 173, Caddo, LA
Built 2013 Load: 32.4 t ADT: 6,846
LA0530
GoodOver: SWIFT BAYOU CANAL
5.13 M. E. OF LA 538, Caddo, LA
Built 2013 Load: 32.4 t ADT: 177
I0049
GoodOver: DRAIN
1.12 M. S. OF LA 170, Caddo, LA
Built 2013 Load: 32.4 t ADT: 53,023
I0049
GoodOver: NANCE BRANCH
0.34 MI. N. OF LA 168, Caddo, LA
Built 2013 Load: 32.4 t ADT: 53,023
Showing 7,901-7,950 of 12,699 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |