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
TURNER RD
FairOver: CREEK
5.2 MI NORTH OF LA 26, Allen, LA
Built 1970 Load: 20.0 t ADT: 314
US0171
FairOver: BRUSH BAYOU
1.7 MI. N. OF LA 3132, Caddo, LA
Built 1954 Load: 20.0 t ADT: 17,212
LA0004
FairOver: CREW BAYOU
2.7 MI EAST OF LA 559, Caldwell, LA
Built 1957 Load: 20.0 t ADT: 1,558
LA0030
FairOver: ELBOW BAYOU
2.1M NW of LA 42&LA 327-S, East Baton Rouge, LA
Built 1961 Load: 20.0 t ADT: 12,779
LA0426
FairOver: WARD CREEK N.BR.
LA0426, East Baton Rouge, LA
Built 1956 Load: 20.0 t ADT: 19,329
LA0004
FairOver: CREEK
.45 MI EAST OF LA 34, Jackson, LA
Built 1969 Load: 20.0 t ADT: 2,910
South College Rd.
FairOver: COULEE MINE
1.1 MI W OF W. PINHOOK RD, Lafayette, LA
Built 1967 Load: 20.0 t ADT: 21,734
LA0182
FairOver: 40 ARPENT CANAL
.01 MI WEST OF LA 652, Lafourche, LA
Built 1952 Load: 20.0 t ADT: 7,322
LA0124
FairOver: BEAR BRANCH
3.1 MI EAST OF US 165, LaSalle, LA
Built 1978 Load: 20.0 t ADT: 1,838
LA0563
FairOver: BIG CREEK
1.73 MI NORTH OF LA 544, Lincoln, LA
Built 1973 Load: 20.0 t ADT: 1,064
LA0563
FairOver: WALNUT CREEK
1.83 MI NORTH OF LA 544, Lincoln, LA
Built 1973 Load: 20.0 t ADT: 1,064
LA0822
FairOver: CREEK
3.59 MI EAST OF US 167, Lincoln, LA
Built 1953 Load: 20.0 t ADT: 1,568
CCC RD
FairOver: DUGDEMONA RIVER
5 MI S SIMSBORO, Lincoln, LA
Built 1979 Load: 20.0 t ADT: 20
CEDAR CREEK RD
FairOver: COLVIN CREEK
CEDAR CREEK RD/ RUSTON, Lincoln, LA
Built 1975 Load: 20.0 t ADT: 325
LA1026
FairOver: GRAYS CREEK
LA1026, Livingston, LA
Built 1963 Load: 20.0 t ADT: 9,389
US0065
FairOver: WILLOW BAYOU REL. CANAL
3.01 MI NORTH OF US 80, Madison, LA
Built 1960 Load: 20.0 t ADT: 6,051
LA0015
FairOver: BAYOU
4.4 MI EAST OF LA 841, Ouachita, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: BLACK STEEP BAYOU
3.8 MI EAST OF LA 841, Ouachita, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: BAYOU
1.5 MI WEST OF LA 841, Ouachita, LA
Built 1951 Load: 20.0 t ADT: 5,994
LA0151
FairOver: CREEK
5.68 MI NORTH OF LA 546, Ouachita, LA
Built 1958 Load: 20.0 t ADT: 2,828
LA0151
FairOver: COCKEREL CREEK
1.1 MI NORTH OF NORTH INT, Ouachita, LA
Built 1967 Load: 20.0 t ADT: 2,862
US0165
FairOver: FLAGON BAYOU RELIEF
0.44 M. N. OF JCT LA 623, Rapides, LA
Built 1956 Load: 20.0 t ADT: 32,758
US0165
FairOver: FLAGON BAYOU
0.61 MI. NORTH OF LA 623, Rapides, LA
Built 1956 Load: 20.0 t ADT: 32,758
LA0015
FairOver: BR. OVER DRAINAGE CANAL
2.1 MI WEST OF LA 133, Richland, LA
Built 1951 Load: 20.0 t ADT: 2,382
LA0015
FairOver: FLAT SLOUGH BRIDGE
12.0 MI NW FRANKLIN PAR, Richland, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: SLOUGH
4.2 MI WEST OF LA 133, Richland, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: B LAFOURCHE RELIEF
5.2 MI WEST OF LA 133, Richland, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0037
FairOver: AMITE R RELIEF
0.1 M SW OF LA 63, St. Helena, LA
Built 1955 Load: 20.0 t ADT: 3,362
LA0037
FairOver: LILLEGS CREEK
1.1 M N OF LA 63, St. Helena, LA
Built 1955 Load: 20.0 t ADT: 1,241
LA0096
FairOver: BAYOU TECHE ST M.
0.13 MI EAST OF LA 31, St. Martin, LA
Built 1942 Load: 20.0 t ADT: 8,684
LA3069
FairOver: B TECHE FRANKLIN
0.25 Mi SW of LA 87, St. Mary, LA
Built 1963 Load: 20.0 t ADT: 1,210
LA0442
FairOver: CREEK
0.1 M E OF US 51, Tangipahoa, LA
Built 1955 Load: 20.0 t ADT: 1,762
LA0445
FairOver: SIMS CREEK
1.0 M N OF LA 445, Tangipahoa, LA
Built 1957 Load: 20.0 t ADT: 8,876
LA0445
FairOver: WASHLEY CREEK
LA0445, Tangipahoa, LA
Built 1957 Load: 20.0 t ADT: 8,876
LA1249
FairOver: CREEK
3MISPUMPKINCTR XIT PUMPCT, Tangipahoa, LA
Built 1994 Load: 20.0 t ADT: 6,110
George Rd
FairOver: PORKER CREEK
1.58M SOUTH OF LA 1063, Tangipahoa, LA
Built 1992 Load: 20.0 t ADT: 560
Briar Patch Cemt
FairOver: LITTLE CHAPEPEELA CREEK
1.1 MI. S OF E BELL RD., Tangipahoa, LA
Built 1992 Load: 20.0 t ADT: 438
Hayden Rd
FairOver: EAST FORK CREEK
2.0M SE PF JCT 10 & 1054, Tangipahoa, LA
Built 1992 Load: 20.0 t ADT: 169
Green farm Rd
FairOver: CREEK
3.0M NE OF JCT 1057&1061, Tangipahoa, LA
Built 1992 Load: 20.0 t ADT: 65
LA0015
FairOver: ONEMILE CREEK
1.0 MI NORTH OF LA 33, Union, LA
Built 1953 Load: 20.0 t ADT: 8,290
LA0335
FairOver: CREEK
5.16 MI W. OF LA 3093, Vermilion, LA
Built 1953 Load: 20.0 t ADT: 284
LA3143
FairOver: WARREN CANAL
2.6 MI W. OF LA 91, Vermilion, LA
Built 1966 Load: 20.0 t ADT: 134
Gallet Rd
FairOver: TOUCHETS CANAL
0.3Mi W of LA 35, Vermilion, LA
Built 1977 Load: 20.0 t ADT: 100
LA0424
FairOver: DRAIN
1.0 M N OF LA 438, Washington, LA
Built 1969 Load: 20.0 t ADT: 1,873
US0371
FairOver: BRUSHY CREEK
5.59MI NORTH OF US 80, Webster, LA
Built 1960 Load: 20.0 t ADT: 6,606
Tunica St.
FairOver: Drainage Cr
0.5 Mi N. of LA 1263, West Feliciana, LA
Built 1974 Load: 20.0 t ADT: 180
Dailey Rd
FairOver: Canal
0.6 Mi. S. of I10, Acadia, LA
Built 1981 Load: 20.1 t ADT: 288
Stevenson Rd
FairOver: DRAINAGE BAYOU
1.1 MI S DUTCHTOWN, Ascension, LA
Built 1970 Load: 20.1 t ADT: 400
LA0452
FairOver: BAYOU ROUGE
3.31 MI. NORTH OF LA 1190, Avoyelles, LA
Built 1953 Load: 20.1 t ADT: 8,736
US0171
FairOver: DRAINAGE
0.5 MI N OF US 90/LA 12, Beauregard, LA
Built 2007 Load: 20.1 t ADT: 12,466
Showing 1,901-1,950 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 |