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
DESTREHAN AVE.
FairOver: KEITHWAY CANAL
1.9 MI E OF LA 3134, Jefferson, LA
Built 2005 Load: 35.0 t ADT: 5,253
Walker Rd.
FairOver: COULEE
1.6 Mi W of University, Lafayette, LA
Built 1988 Load: 35.0 t ADT: 2,000
KIMBROUGH ST
FairOver: BRUSHY BAYOU
0.08 MI S of US 80, Madison, LA
Built 2003 Load: 35.0 t ADT: 3,400
KNOX FERRY RD
FairOver: BAYOU BARTHOLOMEW
5.9 MI. S. INT. 245, Morehouse, LA
Built 1984 Load: 35.0 t ADT: 110
CALYPSO ST
FairOver: MELON CANAL
0.1 MI N of I-20, Ouachita, LA
Built 2004 Load: 35.0 t ADT: 300
Third St
FairOver: BAYOU RAPIDES
0.8 MI. SOUTH OF US 71, Rapides, LA
Built 1970 Load: 35.0 t ADT: 3,800
DESPAUX DR
FairOver: 20 ARPENT CANAL
0.5 MI N OF LA 39, St. Bernard, LA
Built 1994 Load: 35.0 t ADT: 216
LA0033
FairOver: BIG CREEK
0.04 MI. EAST OF LA 551, Union, LA
Built 2011 Load: 35.0 t ADT: 2,603
OAKLAND BRIDGE RD
FairOver: LION CREEK
0.5 MI W of LA 550, Union, LA
Built 2003 Load: 35.0 t ADT: 324
CVOC Rd
FairOver: HOWELL CREEK
4.0 MI E OF US 371, Webster, LA
Built 1999 Load: 35.0 t ADT: 222
Newson Rd
FairOver: INDIAN CREEK
0.4 MI. S. OF HWY 2, Webster, LA
Built 2001 Load: 35.0 t ADT: 195
Spring Branch Rd
FairOver: TRIB TO CROOKED CREEK
1.0 MI. E. OF LA. 7, Webster, LA
Built 1983 Load: 35.0 t ADT: 360
Copes Rd
FairOver: HURRICANE CREEK
5 MI SW PIONEER, West Carroll, LA
Built 1999 Load: 35.0 t ADT: 112
I0010
FairOver: EAST PEARL RIVER
I0010, St. Tammany, LA
Built 1966 Load: 35.1 t ADT: 87,741
Willie Rd
FairOver: COULEE
0.15 M N Cypress Point Rd, Vermilion, LA
Built 2014 Load: 35.2 t ADT: 2
COTTONGIN CASTOR
FairOver: CASTOR CREEK
2.70M NORTH OF LA 104, Allen, LA
Built 1991 Load: 35.3 t ADT: 49
LA0113
FairOver: CREEK
0.98 MI. NORTH OF LA 394, Beauregard, LA
Built 2013 Load: 35.3 t ADT: 1,806
LA0113
FairOver: BUNDICK CREEK
0.92 MI. NORTH OF LA 394, Beauregard, LA
Built 2013 Load: 35.3 t ADT: 1,806
LA0113
FairOver: CREEK
0.79 MI. NORTH OF LA 394, Beauregard, LA
Built 2013 Load: 35.3 t ADT: 1,806
US0171
FairOver: SOUTH BRUSH BAYOU
0.6 MI. S. OF LA 511, Caddo, LA
Built 1986 Load: 35.3 t ADT: 16,911
EAST GREGG STREET
FairOver: BAYOU PIERRE
0.10 MI E OF GILBERT AVE, Caddo, LA
Built 1987 Load: 35.3 t ADT: 3,940
US0425
FairOver: TENSAS RIVER
LOCATED AT CATAHOULA & CO, Catahoula, LA
Built 2008 Load: 35.3 t ADT: 2,645
LA0004
FairOver: ASH SLOUGH CANAL
.4 MI SOUTH OF LA 865, Franklin, LA
Built 1950 Load: 35.3 t ADT: 1,701
I0012
FairOver: PONCHATOLAWA CREEK
0.7 M E OF US 190, St. Tammany, LA
Built 1976 Load: 35.3 t ADT: 79,960
Gueldner Ln
FairOver: CREEK
5.0M SE OF LA 22 EXIT, Tangipahoa, LA
Built 1993 Load: 35.3 t ADT: 6
LA1011
FairOver: B. LAFOURCHE (SUPREME)
0.04 M SW of LA 1&LA 1011, Assumption, LA
Built 1975 Load: 35.4 t ADT: 382
LA1247
FairOver: BAYOU LAFOURCHE
LA0398, Assumption, LA
Built 1953 Load: 35.4 t ADT: 1,038
LA0113
FairOver: DRY CREEK
1 MI S OF LA 394, Beauregard, LA
Built 1947 Load: 35.4 t ADT: 1,806
LA0394
FairOver: CREEK
.68 MI. E OF INT US171/19, Beauregard, LA
Built 1993 Load: 35.4 t ADT: 490
US0171
FairOver: CYPRESS BAYOU
1.3 MI. N. OF LA 3276, Caddo, LA
Built 1981 Load: 35.4 t ADT: 10,623
LA0511
FairOver: BAYOU PIERRE
.8 MI EAST OF LA 523, Caddo, LA
Built 1963 Load: 35.4 t ADT: 23,509
LA3132
FairOver: KCS RR
2.7 MI. E. OF US 171, Caddo, LA
Built 1977 Load: 35.4 t ADT: 53,886
LA3132
FairOver: KCS RR
0.5 MI. W. OF LA 523, Caddo, LA
Built 1977 Load: 35.4 t ADT: 23,520
I0020
FairOver: LOUISIANA AVE
.22 M E OF LA 3036/Line, Caddo, LA
Built 1965 Load: 35.4 t ADT: 98,318
I0210
FairOver: UPRR
.2 MI EAST OF US 90, Calcasieu, LA
Built 1977 Load: 35.4 t ADT: 39,934
LA0108
FairOver: BAYOU D'INDE
2.5 MI. NE OF LA 1133, Calcasieu, LA
Built 1977 Load: 35.4 t ADT: 22,287
OFF HIGHWAY 27
FairOver: ROADSIDE CANAL
POOLS 1A/1B, Cameron, LA
Built 1985 Load: 35.4 t ADT: 58
LA0408
FairOver: KCS & ICG RAILROAD
0.01 Mi. W. of US 61, East Baton Rouge, LA
Built 1972 Load: 35.4 t ADT: 26,976
I0010
FairOver: COLLEGE DRIVE
I0010, East Baton Rouge, LA
Built 1967 Load: 35.4 t ADT: 195,220
I0110
FairOver: CHIPPEWA ON RAMP (N.B.)
I0110, East Baton Rouge, LA
Built 1970 Load: 35.4 t ADT: 8,250
US0061
FairOver: FOSTER CREEK
US0061, East Feliciana, LA
Built 1961 Load: 35.4 t ADT: 2,531
US0071
FairOver: BAYOU GRAPPE
.5 MI NORTH OF LA 471, Grant, LA
Built 1931 Load: 35.4 t ADT: 1,977
LA3066-S
FairOver: PLAQUEMINE BAYOU/IND VIL
LA3066-S, Iberville, LA
Built 1971 Load: 35.4 t ADT: 2,287
I0010
FairOver: WEST FLOODWAY
0.53 M W of I-10&LA975, Iberville, LA
Built 1972 Load: 35.4 t ADT: 42,449
LA0811
FairOver: L DUGDEMONA RIVER
3.5 MI NORTH OF LA 812, Jackson, LA
Built 1948 Load: 35.4 t ADT: 455
LA0028
FairOver: SALINE BAYOU
15.0 MI SOUTH OF LA 84, LaSalle, LA
Built 1960 Load: 35.4 t ADT: 5,026
LA0028
FairOver: SANDY BAYOU
13.2 MI SOUTH OF LA 84, LaSalle, LA
Built 1960 Load: 35.4 t ADT: 5,026
LA0028
FairOver: INDIAN BAYOU
4.3 MI E OF LA 115, LaSalle, LA
Built 1960 Load: 35.4 t ADT: 5,026
LA0028
FairOver: CAMP BAYOU
9.4 MI SOUTH OF LA 84, LaSalle, LA
Built 1960 Load: 35.4 t ADT: 4,357
LA0028
FairOver: BULL BAYOU
8.4 MI SOUTH OF LA 84, LaSalle, LA
Built 1960 Load: 35.4 t ADT: 4,357
Showing 4,701-4,750 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 |