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
US0167
FairOver: MIDDLE FORK SLOUGH
1.5 MI SOUTH OF SOUTH INT, Union, LA
Built 1952 Load: 19.1 t ADT: 422
US0167
FairOver: MIDDLE FORK REL
1.8 MI SOUTH OF SOUTH INT, Union, LA
Built 1952 Load: 19.1 t ADT: 422
US0167
FairOver: LILLIE BRANCH
1.4 MI NORTH OF LA 15, Union, LA
Built 1952 Load: 19.1 t ADT: 422
LA0082
FairOver: HERBERT CANAL
5.92 MI E. OF LA 35, Vermilion, LA
Built 1957 Load: 19.1 t ADT: 2,899
PARISH RD 688
FairOver: BOSTON CANAL
0.6 MI W. OF LA 331, Vermilion, LA
Built 1967 Load: 19.1 t ADT: 150
LA0436
FairOver: DRAIN
3.9 M W OF LA 62, Washington, LA
Built 1957 Load: 19.1 t ADT: 1,148
LA0060
FairOver: BERRY'S CREEK
2.8 Mi NE of LA 1073, Washington, LA
Built 1966 Load: 19.1 t ADT: 749
LA0436
FairOver: CREEK
0.3 M NE OF LA 21, Washington, LA
Built 1954 Load: 19.1 t ADT: 1,306
Rio Grande St
FairOver: WATER BRANCH
0.1 MI S OF HWY. 10, Washington, LA
Built 1960 Load: 19.1 t ADT: 8,450
US0190
FairOver: BAYOU CLAUSE
4.9 M E of LA 415, West Baton Rouge, LA
Built 2001 Load: 19.1 t ADT: 22,996
LA0156
FairOver: MILL CREEK
2.73 MI. EAST OF LA 1233, Winn, LA
Built 1952 Load: 19.1 t ADT: 525
Oliver Rd
FairOver: Clark Bayou Trib
1.5 MILES EAST OF LA 157, Bossier, LA
Built 2009 Load: 19.2 t ADT: 100
GARRIE CUT-OFF
FairOver: HAMPTON COULEE
2.8 MI EAST OF LA 109, Calcasieu, LA
Built 1960 Load: 19.3 t ADT: 558
B. SEGNETTE ST PK
FairOver: RAILROAD CANAL
0.45 MI.S. OF W.B.EXPWY., Jefferson, LA
Built 1996 Load: 19.3 t
Oak Ridge Rd
FairOver: CANAL
1 TENTH OF A MILE EAST OF, Livingston, LA
Built 2013 Load: 19.3 t ADT: 100
Willie Walker Rd
FairOver: CREEK
0.10 MILES EAST OF LA. 43, Livingston, LA
Built 1990 Load: 19.3 t ADT: 2
MILLER ROAD
FairOver: BAYOU BARBARY
2.75 MI N OF LA. 444, Livingston, LA
Built 2017 Load: 19.3 t ADT: 50
McCarrol Rd
FairOver: CREEK
4.0 MI SE OF EXIT 43, Livingston, LA
Built 1960 Load: 19.3 t ADT: 400
OSCAR LUM RD
FairOver: WILLIAMSON CREEK
.6 MI. N. INT. 383, Morehouse, LA
Built 1960 Load: 19.3 t ADT: 80
HARRELL RD
FairOver: STEEP BAYOU
1 MILE NORTH OF HWY 80, Ouachita, LA
Built 2013 Load: 19.3 t ADT: 731
CYPRESS SCHOOL RD
FairOver: CYPRESS CREEK
4 MI S OKALOOSA, Ouachita, LA
Built 1979 Load: 19.3 t ADT: 235
GOOD HOPE RD
FairOver: N TUPAWEK BAYOU
3 MI NW WEST MONROE, Ouachita, LA
Built 1978 Load: 19.3 t ADT: 3,947
LA0576
FairOver: CREEK
.6 MI EAST OF LA 622, Richland, LA
Built 1968 Load: 19.3 t ADT: 162
LA3039
FairOver: BAYOU PORTAGE
5.7 MI NORTH OF LA 347, St. Martin, LA
Built 1961 Load: 19.3 t ADT: 1,807
Division Rd
FairOver: COULEE
1.0 Mi SW of LA 345, St. Martin, LA
Built 1970 Load: 19.3 t ADT: 129
Old Hwy. 41 Spur
FairOver: DRAIN
0.20 SOUTHWEST OF LA 41, St. Tammany, LA
Built 2005 Load: 19.3 t ADT: 2,877
LA0365
FairOver: LONG POINT GULLY
0.5 MI W. of La 13, Acadia, LA
Built 1979 Load: 19.4 t ADT: 568
Causey Rd
FairOver: BLACK BAYOU
2.2 MI.E.OF PRAIRIEV, Ascension, LA
Built 1973 Load: 19.4 t ADT: 500
Bayou Dr W
FairOver: BAYOU PIERRE PASS
PIERRE PART, Assumption, LA
Built 1988 Load: 19.4 t ADT: 2,520
LA0507
FairOver: KEPLER CREEK
4.36 MI NORTH OF LA 4, Bienville, LA
Built 1961 Load: 19.4 t ADT: 780
LA0164
FairOver: CLARKE BAYOU
.29 MI EAST OF LA 614, Bossier, LA
Built 1943 Load: 19.4 t ADT: 3,472
Self Rd
FairOver: Dooley Canal
1.1 Mi. W OF US 71, Caddo, LA
Built 1978 Load: 19.4 t ADT: 97
Gamm Rd
FairOver: GAMM RD, SWIFT BAYOU
1.74 MI N OF SELF ROAD, Caddo, LA
Built 1980 Load: 19.4 t ADT: 77
LA0067
FairOver: STREAM NO NAME
1 M S of LA 64&LA 67, East Baton Rouge, LA
Built 1930 Load: 19.4 t ADT: 12,649
LA0019
FairOver: COPPER MILL BAYOU
1.8 M N of LA 64, East Baton Rouge, LA
Built 1951 Load: 19.4 t ADT: 11,198
LA0019
FairOver: NORTH CANAL
2.0 M N of LA 19&LA 64, East Baton Rouge, LA
Built 1951 Load: 19.4 t ADT: 11,198
I0010
FairOver: MISSISSIPPI RIVER
I0010, East Baton Rouge, LA
Built 1968 Load: 19.4 t ADT: 197,070
Perkins Rd
FairOver: K.C.S. RR
PERKINS ROAD, East Baton Rouge, LA
Built 1938 Load: 19.4 t ADT: 9,000
Rollins Rd
FairOver: CYPRESS BAYOU
2.2 MI NW JCT LA 64, East Baton Rouge, LA
Built 1969 Load: 19.4 t ADT: 5,210
LA0010
FairOver: CREEK
8.8 MI SOUTH OF LA 106, Evangeline, LA
Built 1950 Load: 19.4 t ADT: 1,599
Bayou Toureau Rd
FairOver: SLOUGH
2.17 Mi NW of La 115, Evangeline, LA
Built 1970 Load: 19.4 t ADT: 76
Frontier Rd
FairOver: BAYOU COCODRIE
0.03 MI W of LA 115, Evangeline, LA
Built 2004 Load: 19.4 t ADT: 55
I0010
FairOver: LOYOLA AVE.
1.2 MI EAST OF I-310, Jefferson, LA
Built 1971 Load: 19.4 t ADT: 126,119
I0010
FairOver: LOYOLA AVE
1.2 MI EAST OF I-310, Jefferson, LA
Built 1971 Load: 19.4 t ADT: 41,695
US0090
FairOver: DRAIN
1.6 MI EAST OF LA 101, Jefferson Davis, LA
Built 1935 Load: 19.4 t ADT: 5,020
Savoy Rd.
FairOver: PARC PERDU BAYOU
0.78 Mi SW of LA 89, Lafayette, LA
Built 1975 Load: 19.4 t ADT: 840
Maple Dr.
FairOver: COULEE
0.10 Mi W of Birch Dr, Lafayette, LA
Built 1971 Load: 19.4 t ADT: 1,500
W. Congress St.
FairOver: MINE BRANCH COULEE
0.65 MI W. LA182, Lafayette, LA
Built 1968 Load: 19.4 t ADT: 15,120
E. Butcher Switch
FairOver: DRAINAGE COULEE
0.58 Mi E of I-49, Lafayette, LA
Built 1981 Load: 19.4 t ADT: 1,122
LA0447
FairOver: CANAL
1.2 M S OF I-12, Livingston, LA
Built 1958 Load: 19.4 t ADT: 34,245
Showing 1,801-1,850 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 |