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
OLD CAMP RD
FairOver: CREEK
1.1 MI E OF WARD LINE RD, Calcasieu, LA
Built 2008 Load: 40.8 t ADT: 27
LA0397
FairOver: BAYOU
2.9 MI NORTH OF LA 14, Calcasieu, LA
Built 1982 Load: 40.8 t ADT: 9,291
I0210
FairOver: BROAD STREET
2.52 MI EAST OF LA 14, Calcasieu, LA
Built 1977 Load: 40.8 t ADT: 39,934
I0210
FairOver: BROAD STREET
2.52 MI EAST OF LA 14, Calcasieu, LA
Built 1977 Load: 40.8 t ADT: 608
I0010
FairOver: RYAN STREET
0.4 M E OF N LAKESHORE DR, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 73,488
I0010
FairOver: RYAN STREET
2.7 MI W OF US 171, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 11,437
I0010
FairOver: BILBO STREET
0.5 M E OF N LAKESHORE DR, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 73,488
I0010
FairOver: BILBO STREET
2.6 MI W OF US 171, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 11,437
I0010
FairOver: KIRKMAN STREET
0.9 MI E OF N LAKESHORE D, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 73,488
WEST DAVIS DUGAS
FairOver: BAYOU CHOUPIQUE
3.0 MI W of LA 27, Calcasieu, LA
Built 2007 Load: 40.8 t ADT: 1,663
FANCHER ST
FairOver: FARMERS L & C CO. CANAL
0.2 MI EAST OF LA 3063, Calcasieu, LA
Built 1968 Load: 40.8 t ADT: 100
BOYS VILLAGE RD
FairOver: EAST FORK ENGLISH BAYOU
0.2 MI S of LA 3256, Calcasieu, LA
Built 2003 Load: 40.8 t ADT: 591
LA0506
FairOver: CREEK
.5 MI W OF US 165, Caldwell, LA
Built 1996 Load: 40.8 t ADT: 306
LA0384
FairOver: NORTH CANAL
4.5 MI E of LA27, Cameron, LA
Built 1985 Load: 40.8 t ADT: 109
LA0009
FairOver: BEAVER BRANCH
.92 MI NORTH OF LA 2, Claiborne, LA
Built 1979 Load: 40.8 t ADT: 1,812
US0171
FairOver: RAMBIN BAYOU
1.5 MI. S. OF LA 5, De Soto, LA
Built 1978 Load: 40.8 t ADT: 6,604
LA0509
FairOver: CLEAR LAKE
2.1 MI EAST OF I-49, De Soto, LA
Built 1981 Load: 40.8 t ADT: 5,263
I0049
FairOver: WALLACE BAYOU
3.14 MI SOUTH OF LA 177, De Soto, LA
Built 1987 Load: 40.8 t ADT: 16,334
I0049
FairOver: WALLACE BAYOU
3.14 MI SOUTH OF LA 177, De Soto, LA
Built 1987 Load: 40.8 t ADT: 28,142
I0049
FairOver: CHEMARD BAYOU
2.24 MI SOUTH OF LA 177, De Soto, LA
Built 1987 Load: 40.8 t ADT: 16,334
I0049
FairOver: CHEMARD BAYOU
2.24 MI SOUTH OF LA 177, De Soto, LA
Built 1987 Load: 40.8 t ADT: 28,142
I0049
FairOver: MUNDY BAYOU
0.27 MI N OF US 84 INTER., De Soto, LA
Built 1986 Load: 40.8 t ADT: 29,022
I0049
FairOver: MUNDY BAYOU
0.26 MI N OF US 84 INTER., De Soto, LA
Built 1985 Load: 40.8 t ADT: 28,142
I0049
FairOver: MUNDY BAYOU
0.27 MI N OF US 84 INTER., De Soto, LA
Built 1985 Load: 40.8 t ADT: 8,115
I0049
FairOver: MUNDY BAYOU
0.26 MI N OF US 84 INTER., De Soto, LA
Built 1986 Load: 40.8 t ADT: 8,115
I0049
FairOver: BUFFALO BAYOU
1.64 MI N OF US 84 INTER., De Soto, LA
Built 1985 Load: 40.8 t ADT: 29,022
I0049
FairOver: BUFFALO BAYOU
1.63 MI N OF US 84 INTER, De Soto, LA
Built 1985 Load: 40.8 t ADT: 28,142
I0049
FairOver: SIPHORIEN BAYOU
4.14 MI N OF US 84 INTER, De Soto, LA
Built 1986 Load: 40.8 t ADT: 29,022
I0049
FairOver: SIPHORIEN BAYOU
0.6 MI. South of LA 509, De Soto, LA
Built 1986 Load: 40.8 t ADT: 28,142
I0049
FairOver: RAMBIN BAYOU
0.3 MI. N. OF LA 175 INTG, De Soto, LA
Built 1986 Load: 40.8 t ADT: 29,022
I0049
FairOver: RAMBIN BAYOU
0.3 MI. N. OF LA 175 INTG, De Soto, LA
Built 1986 Load: 40.8 t ADT: 28,142
I0049
FairOver: BRUSHY BAYOU
0.9 MI. N OF LA 175 INTG., De Soto, LA
Built 1986 Load: 40.8 t ADT: 29,022
I0049
FairOver: BRUSHY BAYOU
0.9 MI. N. OF LA 175 INTG, De Soto, LA
Built 1986 Load: 40.8 t ADT: 28,142
I0049
FairOver: WALLACE BAYOU
6.95 MI N OF LA 175 INTG, De Soto, LA
Built 1988 Load: 40.8 t ADT: 29,022
I0049
FairOver: WALLACE BAYOU
6.95 MI N OF LA 175 INTG, De Soto, LA
Built 1988 Load: 40.8 t ADT: 28,142
US0065
FairOver: WILD CAT BAYOU
5.4 MI SOUTH OF LA 580, East Carroll, LA
Built 1985 Load: 40.8 t ADT: 2,671
I0049
FairOver: DRAINAGE CANAL
3.1 MI SOUTH OF LA 106, Evangeline, LA
Built 1986 Load: 40.8 t ADT: 19,966
LA0376
FairOver: Relief for Bayou Nepique
7.0 MI WEST OF LA 13, Evangeline, LA
Built 1994 Load: 40.8 t ADT: 104
I0010
FairOver: I-10 RAMP
0.3 M E of LA 975, Iberville, LA
Built 1972 Load: 40.8 t ADT: 108
LA0004
FairOver: CASTOR CREEK
5.0 MI EAST OF LA 499, Jackson, LA
Built 1979 Load: 40.8 t ADT: 338
LA0155
FairOver: CHOCTAW CREEK
2.29 MI WEST OF US 167, Jackson, LA
Built 1981 Load: 40.8 t ADT: 1,222
LA0155
FairOver: DUGDEMONA RIVER
1.69 MI WEST OF US 167, Jackson, LA
Built 1981 Load: 40.8 t ADT: 1,222
LA0034
FairOver: WOLF CREEK
1.09 MI NORTH OF LA 147, Jackson, LA
Built 1982 Load: 40.8 t ADT: 1,370
LA0034
FairOver: CREEK
3.88 MI NORTH OF LA 147, Jackson, LA
Built 1982 Load: 40.8 t ADT: 1,370
LA0034
FairOver: CANEY CREEK
.01 MI NORTH OF LA 801, Jackson, LA
Built 1982 Load: 40.8 t ADT: 1,443
LA0034
FairOver: CANEY CREEK RELIEF
.21 MI NORTH OF LA 801, Jackson, LA
Built 1982 Load: 40.8 t ADT: 1,443
US0090
FairOver: EAST LACASSINE BAYOU
0.1 MI E OF LA 99, Jefferson Davis, LA
Built 1985 Load: 40.8 t ADT: 4,262
US0090
FairOver: CHENE BAYOU
2.4 MI EAST OF LA 395, Jefferson Davis, LA
Built 1985 Load: 40.8 t ADT: 4,262
Consolidated Dr.
FairOver: DRAINAGE
0.04 Mi E. of Tideland Rd, Lafayette, LA
Built 1999 Load: 40.8 t ADT: 1,769
US0167
FairOver: COULEE ILE DES CANNES
0.9 MI NORTH OF LA 92, Lafayette, LA
Built 1984 Load: 40.8 t ADT: 8,985
Showing 5,701-5,750 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 |