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
US0079
FairOver: CREEK
4.14 MI EAST OF LA 518, Webster, LA
Built 1932 Load: 32.4 t ADT: 9,942
LA0002
FairOver: CREEK
1.7 MI EAST OF US 371, Webster, LA
Built 1954 Load: 32.4 t ADT: 1,483
LA0002
FairOver: CREEK
3.7 MI EAST OF LA 802, Webster, LA
Built 1955 Load: 32.4 t ADT: 1,037
LA0002
FairOver: HALL BRANCH
4.5 MI EAST OF LA 802, Webster, LA
Built 1955 Load: 32.4 t ADT: 1,037
LA0002
FairOver: CREEK
6.2 MI EAST OF LA 802, Webster, LA
Built 1955 Load: 32.4 t ADT: 1,037
LA0002
FairOver: SAND CREEK
1.0 MI EAST OF LA 159, Webster, LA
Built 1960 Load: 32.4 t ADT: 817
LA0160
FairOver: CREEK
5.2 MI EAST OF LA 3014, Webster, LA
Built 1957 Load: 32.4 t ADT: 502
US0371
FairOver: CREEK
2.44 MI NORTH OF US 80, Webster, LA
Built 1960 Load: 32.4 t ADT: 8,913
US0371
FairOver: CREEK
11.27 MI NORTH OF US 80, Webster, LA
Built 1962 Load: 32.4 t ADT: 4,481
US0371
FairOver: DRAIN
11.71 MI NORTH OF US 80, Webster, LA
Built 1962 Load: 32.4 t ADT: 4,481
US0371
FairOver: CREEK
2.44 MI NORTH OF LA 160, Webster, LA
Built 1959 Load: 32.4 t ADT: 6,569
I0020
FairOver: MILE CREEK
2.3 MI EAST OF LA 371, Webster, LA
Built 1960 Load: 32.4 t ADT: 32,869
I0020
FairOver: BRUSHY CREEK
4.16 MI EAST OF LA 159, Webster, LA
Built 1960 Load: 32.4 t ADT: 37,514
Montgomery Xing
FairOver: PRAIRIE BAYOU
0.6 MI W OF HWY 163, Webster, LA
Built 1959 Load: 32.4 t ADT: 281
Industrial Drive
FairOver: TRIBUTARY TO COOLEY CREE
0.56 MI SE OF LA 7, Webster, LA
Built 1995 Load: 32.4 t ADT: 68
McIntyre St
FairOver: TRIBUTARY TO MILE CREEK
1 MI N OF HWY 79-80, Webster, LA
Built 1930 Load: 32.4 t ADT: 400
US0190
FairOver: DRAINAGE CANAL
3.0 M E of LA 413@US 190, West Baton Rouge, LA
Built 1959 Load: 32.4 t ADT: 22,996
US0190
FairOver: POYDRAS BAYOU
0.01 M W of LA 413@US 190, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 20,176
LA0076
FairOver: STREAM NO NAME
1.9 M W of LA 413@LA 76, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 7,562
LA0076
FairOver: BAYOU TOMMY
0.4 M W of LA 413@LA 76, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 7,562
LA0076
FairOver: STREAM NO NAME
1.3 M E of LA 413@LA 76, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 7,562
I0010
FairOver: DRAINAGE CANAL
0.51 M W of LA 415&I-10, West Baton Rouge, LA
Built 1969 Load: 32.4 t ADT: 80,618
I0010
FairOver: DRAINAGE CANAL
0.92 M E of LA 415&I-10, West Baton Rouge, LA
Built 1969 Load: 32.4 t ADT: 41,644
LA0585
FairOver: DRAIN
LA0585, West Carroll, LA
Built 1985 Load: 32.4 t ADT: 565
LA0586
FairOver: CREEK
1.2 MI EAST OF LA 583, West Carroll, LA
Built 1938 Load: 32.4 t ADT: 242
LA0010
FairOver: HAMMER CREEK TRIB
6.41 Mi E of US 61, West Feliciana, LA
Built 1948 Load: 32.4 t ADT: 1,585
LA0965
FairOver: WEST FORK BAYOU
0.6 M E of US 61&LA 965, West Feliciana, LA
Built 1959 Load: 32.4 t ADT: 2,133
OLD TUNICA RD
FairOver: DRAIN BAYOU
2.2 MILES SE OF ANGO, West Feliciana, LA
Built 2007 Load: 32.4 t ADT: 15
Old Tunica Rd
FairOver: DRAIN CREEK
3 MI S. JCT LA 66, West Feliciana, LA
Built 2007 Load: 32.4 t ADT: 17
US0167
FairOver: CREEK
2.1 MI NORTH OF LA 126, Winn, LA
Built 1924 Load: 32.4 t ADT: 5,107
LA0127
FairOver: CREEK
12.01 M. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 32.4 t ADT: 183
US0167
FairOver: TANNEHILL CREEK
0.32 MI. NORTH OF LA 505, Winn, LA
Built 1952 Load: 32.4 t ADT: 5,367
US0167
FairOver: TANNEHILL CREEK
0.89 MI. NORTH OF LA 505, Winn, LA
Built 1952 Load: 32.4 t ADT: 5,367
LA0034
FairOver: CREEK
0.29 MI. NORTH OF LA 471, Winn, LA
Built 1952 Load: 32.4 t ADT: 965
LA0124
FairOver: PINEY WOODS CREEK
4.24 MI EAST OF US 84, Winn, LA
Built 1929 Load: 32.4 t ADT: 1,348
LA0097
FairOver: BAYOU NEZPIQUE
0.3 MI NORTH OF I-10, Acadia, LA
Built 1990 Load: 32.7 t ADT: 1,175
I0010
FairOver: BAYOU JONAS
8.3 MI EAST OF LA 97, Acadia, LA
Built 1961 Load: 32.7 t ADT: 48,502
I0010
FairOver: BAYOU JONAS
1.86 Mi W of LA 91, Acadia, LA
Built 1961 Load: 32.7 t ADT: 1,471
TYLER RD
FairOver: WEST FORK CANEY CREEK
1.0 MI. S. OF LA. 372, Allen, LA
Built 1997 Load: 32.7 t ADT: 202
MILLER ST
FairOver: CREEK
0.1 MI N OF W BECK AVE, Allen, LA
Built 1997 Load: 32.7 t ADT: 450
Babin Rd
FairOver: GRAND GOUDINE BAYOU
0.5 M N of LA 74, Ascension, LA
Built 1970 Load: 32.7 t ADT: 500
LA0070
FairOver: Avoca Island Cutoff
5.7 MI N LA 1016-1, Assumption, LA
Built 1988 Load: 32.7 t ADT: 6,787
I0049
FairOver: ACADIANA RAILWAY
2.23 MI NORTH OF LA 106, Avoyelles, LA
Built 1986 Load: 32.7 t ADT: 19,302
LA0027
FairOver: CREEK
11.57 MI. N OF INT LA12, Beauregard, LA
Built 1979 Load: 32.7 t ADT: 4,695
I0220
FairOver: SWAN LAKE ROAD
1.9 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.7 t ADT: 35,972
EAST GATE BRIDGE
FairOver: MACKS BAYOU
0.1 MI S. OF INDUSTRIAL D, Bossier, LA
Built 1998 Load: 32.7 t ADT: 2,000
RANGE ROAD
FairOver: COOPER BAYOU
0.1 MI West of Dunn Road, Bossier, LA
Built 1951 Load: 32.7 t ADT: 2,500
RANGE ROAD
FairOver: FLAT RIVER
1.9 MI E. OF LINDBURG RD, Bossier, LA
Built 1951 Load: 32.7 t ADT: 2,000
RANGE ROAD
FairOver: CLEAR LAKE
1.8 MI E OF LINDBERG RD, Bossier, LA
Built 1993 Load: 32.7 t ADT: 2,000
CONVOY ROUTE
FairOver: COOPER BAYOU
0.2 MI W. OF PERIMETER RD, Bossier, LA
Built 1987 Load: 32.7 t ADT: 25
Showing 4,301-4,350 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 |