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
LA0139
FairOver: I.P. DRAINAGE CANAL
5.9 MI NORTH OF LA 554, Morehouse, LA
Built 1973 Load: 41.7 t ADT: 9,490
US0165-B
FairOver: CITY ST & ICRR
.3 MI NORTH OF I-20, Ouachita, LA
Built 1971 Load: 41.7 t ADT: 17,565
LA0023
FairOver: BAYOU BARRIERE
.3 MI SOUTH OF LA 428, Plaquemines, LA
Built 1968 Load: 41.7 t ADT: 25,594
LA0006
FairOver: EDMONSON CREEK
1.3 MI EAST OF LA 476, Sabine, LA
Built 1950 Load: 41.7 t ADT: 5,277
LA0191
FairOver: TOLEDO BEND RESERVOIR
.3 MI SOUTH OF LA 392, Sabine, LA
Built 1963 Load: 41.7 t ADT: 684
I0010
FairOver: EB ON RAMP (US51)
I0010, St. John the Baptist, LA
Built 1972 Load: 41.7 t ADT: 15,642
US0190
FairOver: PONCHITOLAWA CR
US 190, St. Tammany, LA
Built 1976 Load: 41.7 t ADT: 25,200
I0010
FairOver: CANAL
0.5 M SW OF US 190, St. Tammany, LA
Built 1966 Load: 41.7 t ADT: 82,860
I0010
FairOver: DRAINAGE CANAL
I0010, St. Tammany, LA
Built 1966 Load: 41.7 t ADT: 1,600
I0010
FairOver: CANAL
0.7 M N OF US 190, St. Tammany, LA
Built 1966 Load: 41.7 t ADT: 55,785
I0010
FairOver: CANAL
0.7 M N OF US 190, St. Tammany, LA
Built 1966 Load: 41.7 t ADT: 1,600
I0010
FairOver: W PEARL RIVER
2.1 Mi. E of I-59, St. Tammany, LA
Built 1970 Load: 41.7 t ADT: 55,785
I0010
FairOver: W PEARL RIVER
6.2 Mi. W of MS 607, St. Tammany, LA
Built 1970 Load: 41.7 t ADT: 1,600
I0012
FairOver: VINCENT BAYOU
I0012, St. Tammany, LA
Built 1970 Load: 41.7 t ADT: 78,215
I0012
FairOver: VINCENT BAYOU
I0012, St. Tammany, LA
Built 1970 Load: 41.7 t ADT: 29,236
US0190
FairOver: PONCHATOULA CREEK C
US0190, Tangipahoa, LA
Built 1975 Load: 41.7 t ADT: 21,045
I0055
FairOver: PARISH ROAD
I0055, Tangipahoa, LA
Built 1966 Load: 41.7 t ADT: 21,762
I0012
FairOver: BEDICO CREEK
I0012, Tangipahoa, LA
Built 1975 Load: 41.7 t ADT: 53,386
I0012
FairOver: BEDICO CREEK
I0012, Tangipahoa, LA
Built 1975 Load: 41.7 t ADT: 17,665
US0171
FairOver: BAYOU ZOURIE
1.1 MI NORTH OF LA 10, Vernon, LA
Built 1978 Load: 41.7 t ADT: 6,952
LA1075
FairOver: DUMMY BRANCH
LA1075, Washington, LA
Built 1980 Load: 41.7 t ADT: 2,917
LA1075
FairOver: LEE'S CREEK
LA1075, Washington, LA
Built 1980 Load: 41.7 t ADT: 2,917
I0010
FairOver: RAMP TO PORT ALLEN
0.18 M E of LA 1, West Baton Rouge, LA
Built 1968 Load: 41.7 t ADT: 7,586
KYLE ROAD
FairOver: BAYOU LACASSINE TRIBUTAR
0.2 M W Gott Rd., Jefferson Davis, LA
Built 2003 Load: 41.8 t ADT: 50
Loranger Rd
FairOver: MORGAN BRANCH
2 MI N OF JCT. 1062 & 40, Tangipahoa, LA
Built 1999 Load: 41.8 t ADT: 2,504
US0171
FairOver: BARNES CREEK
5.4 MI NORTH OF LA 110, Beauregard, LA
Built 2007 Load: 42.1 t ADT: 8,463
US0171
FairOver: CREEK
0.2 MI N of LA 394, Beauregard, LA
Built 2007 Load: 42.1 t ADT: 12,041
US0171
FairOver: CREEK
2.5 MI S of LA 26, Beauregard, LA
Built 2007 Load: 42.1 t ADT: 8,021
US0171
FairOver: PALMETTO CREEK
1.2 MI S of LA 26, Beauregard, LA
Built 2007 Load: 42.1 t ADT: 12,041
US0171
FairOver: PALMETTO CREEK
14.0 MI NORTH OF LA 110 O, Beauregard, LA
Built 2007 Load: 42.1 t ADT: 8,021
COURTESY LANE
FairOver: COURTESY LANE DITCH
0.1 MI E OF US 171, Caddo, LA
Built 2005 Load: 42.1 t ADT: 1,500
NURSERY STREET
FairOver: BUXTON CREEK
0.1 MI E OF OAK STREET, Calcasieu, LA
Built 2020 Load: 42.1 t ADT: 485
MOUTON ROAD
FairOver: CHENE BAYOU
0.3 MI E OF LA 382, Jefferson Davis, LA
Built 2020 Load: 42.1 t ADT: 70
Sage Glenn Ln.
FairOver: DES POCHES COULEE
.08 Mi NE of W Pinhook Rd, Lafayette, LA
Built 1984 Load: 42.1 t ADT: 79
Daigle St.
FairOver: Francois Coulee
.60 MI E of LA 728-1, Lafayette, LA
Built 1999 Load: 42.1 t ADT: 475
LAKE IRWIN RD
FairOver: LITTLE LAKE LAFOURCHE
8.9 MI SW of LA 134, Morehouse, LA
Built 1999 Load: 42.1 t ADT: 280
STATEPRK
FairOver: POVERTY POINT RESERVOIR
0.4 MI EAST OF LA 17 ON P, Richland, LA
Built 1999 Load: 42.1 t ADT: 300
LA0029
FairOver: BAYOU COCODRIE
0.05 MI WEST OF I-49, St. Landry, LA
Built 1987 Load: 42.1 t ADT: 665
Durbin Rd
FairOver: STILL BRANCH
W. END OF WARDLINE RD, Tangipahoa, LA
Built 1986 Load: 42.1 t ADT: 1,252
SHRIMPERS ROW RD
FairOver: KINGS BAYOU/COULEE CANAL
1.1 MI N OF LA 57, Terrebonne, LA
Built 2017 Load: 42.1 t ADT: 517
Clearlake Rd
FairOver: COLEWA BAYOU
2.1 MI E of LA 585, West Carroll, LA
Built 1992 Load: 42.1 t ADT: 312
CLYDE PACE-VIVIAN
FairOver: OLD BLACK BAYOU
2.6 MI. SOUTH OF LA 170, Caddo, LA
Built 1997 Load: 42.4 t ADT: 133
PACKING HOUSE ROAD
FairOver: EAST FORK ENGLISH BAYOU
0.3 MI N OF US 90, Calcasieu, LA
Built 2023 Load: 42.4 t ADT: 334
ELLIS MOSS RD
FairOver: BAYOU
2.6 MI WEST OF LA 27, Calcasieu, LA
Built 1999 Load: 42.4 t ADT: 141
COULEE CR RD
FairOver: COULEE CREEK
0.9 MI. S. OF INT. 435, Jackson, LA
Built 1984 Load: 42.4 t ADT: 530
RISER RD
FairOver: MONCRIEF CREEK
1.0 MI SE of US 167, Lincoln, LA
Built 2005 Load: 42.4 t ADT: 540
RISER RD
FairOver: MONCRIEF CREEK RELIEF
0.9 MI SE of US 167, Lincoln, LA
Built 2005 Load: 42.4 t ADT: 540
GARLAND GIN RD
FairOver: GARLAND GIN CREEK
0.5 MILES EAST OF LA 837, Ouachita, LA
Built 2012 Load: 42.4 t ADT: 200
HERMITAGE RD
FairOver: DEER RANGE CANAL
3.0 MI. WEST OF LA. 23, Plaquemines, LA
Built 1997 Load: 42.4 t
HERMITAGE RD
FairOver: SUZIE BAYOU
1.4 NI.WEST OF HWY 23., Plaquemines, LA
Built 1997 Load: 42.4 t
Showing 5,851-5,900 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 |