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
LA0537
PoorOver: POSTEN BAYOU
6.30 MI NORTH OF LA 2, Bossier, LA
Built 1971 Load: 8.7 t ADT: 67
Switzerland Rd.
PoorOver: DARBY COULEE
0.37 Mi SW of LA 339, Lafayette, LA
Built 1985 Load: 8.7 t ADT: 16
GRAND CAILLOU RD
PoorOver: PLATT BAYOU
0119 LOG MI FROM IN, Terrebonne, LA
Built 1978 Load: 8.7 t ADT: 128
LA3147
PoorOver: HUMBLE CANAL
5.5 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 8.7 t ADT: 221
Airport Rd
PoorOver: Coulee Triet
1.6 Mi. E. of La 1124, Acadia, LA
Built 1965 Load: 9.1 t ADT: 40
Foster Arbor Rd
PoorOver: TOPY CREEK
3.3 MI. WEST OF LA 1, Bienville, LA
Built 1975 Load: 9.1 t ADT: 100
VASTAR ROAD
PoorOver: CENTRAL CANAL
VASTAR ROAD, Cameron, LA
Built 1983 Load: 9.1 t ADT: 10
Monte Sano Ave
PoorOver: DRAIN TO MONTE SANO BAYO
0.3 MI E OF I-110/US190EX, East Baton Rouge, LA
Built 1980 Load: 9.1 t ADT: 192
Dyer Rd
PoorOver: SOUTH BAYOU
3.5 MI.S.LA67,LA64 I, East Baton Rouge, LA
Built 1960 Load: 9.1 t ADT: 1,636
Port Hudson-Pride
PoorOver: INDIAN BAYOU
0.8 M E OF LA 19, East Baton Rouge, LA
Built 1965 Load: 9.1 t ADT: 2,562
LA0963
PoorOver: REDWOOD CREEK
0.9 MI WEST OF LA 19, East Feliciana, LA
Built 1958 Load: 9.1 t ADT: 905
ABELL ROAD
PoorOver: DITCH
2.0 MI E of LA 101, Jefferson Davis, LA
Built 1978 Load: 9.1 t ADT: 50
ROSTROM ROAD
PoorOver: DRAIN
3.6 MI S of LA 102, Jefferson Davis, LA
Built 1980 Load: 9.1 t ADT: 70
Zeagler Rd
PoorOver: CREEK
0.7 miles S of LA 503, LaSalle, LA
Built 1990 Load: 9.1 t ADT: 145
Frank Ballard Rd
PoorOver: CAT BRANCH
0.7 MI NW OF LA 441 EXIT, Livingston, LA
Built 1982 Load: 9.1 t ADT: 150
LAURELI RD
PoorOver: BRANCH OF CYPRESS CREEK
4 MILES SW LUNA, Ouachita, LA
Built 1980 Load: 9.1 t ADT: 16
AVERY RD
PoorOver: CYPRESS CREEK
3 MI W LUNA, Ouachita, LA
Built 1965 Load: 9.1 t ADT: 32
US0090
PoorOver: EAST PEARL RIVER
US0090, St. Tammany, LA
Built 1934 Load: 9.1 t ADT: 1,215
Rosaryville Rd
PoorOver: CREEK
4.5 MI SW OF SR 22 E, Tangipahoa, LA
Built 1975 Load: 9.1 t ADT: 512
Cambell Rd
PoorOver: CREEK
1.4 MI NW OF LA 51 E, Tangipahoa, LA
Built 1975 Load: 9.1 t ADT: 269
Singing Waterfall
PoorOver: CREEK
3 MI NE OF JCT 1062, Tangipahoa, LA
Built 1960 Load: 9.1 t ADT: 64
M. Williams Rd
PoorOver: SPRING CREEK
1 MI SE OF JCT 38 &, Tangipahoa, LA
Built 1960 Load: 9.1 t ADT: 93
Jimi Thomas Rd
PoorOver: MILLER CREEK BRIDGE
4.6 MI N. OF HWY LA 10, Washington, LA
Built 1960 Load: 9.1 t ADT: 62
Old Columbia Rd
PoorOver: Jamieson Creek
4 MI. N. OF HWY. 25, Washington, LA
Built 1970 Load: 9.1 t ADT: 829
Jamerson Cr. Rd
PoorOver: JAMIESON CREEK
0.8 M W OF HIGHWAY 430, Washington, LA
Built 1990 Load: 9.1 t ADT: 183
Grisby Rd
PoorOver: TRIB TO FLAT LICK BAYOU
1.88 MI. E. OF LA. 1, Webster, LA
Built 1979 Load: 9.1 t ADT: 37
LA0153
PoorOver: TOPY CREEK RELIEF
2.79 MI NORTH OF LA 155, Bienville, LA
Built 1975 Load: 9.4 t ADT: 1,377
Victoria Dr
PoorOver: HURRICANE CREEK
400' N OF US 190, East Baton Rouge, LA
Built 1968 Load: 9.4 t ADT: 800
LA0068
PoorOver: KARRS CREEK
4 MI S La 10, East Feliciana, LA
Built 1964 Load: 9.4 t ADT: 4,439
Libuse Cut-off Rd
PoorOver: FLAGON BAYOU
1.0 MI. NORTH OF LA 28, Rapides, LA
Built 1979 Load: 9.4 t ADT: 220
LA1215
PoorOver: TOLEDO BEND LAKE
1.08 MI. WEST OF LA 191, Sabine, LA
Built 1968 Load: 9.4 t ADT: 1,532
Hosston River Rd
PoorOver: HOSSTON R. RD, KELLY B.
0.8 MILES E OF INT. US 71, Caddo, LA
Built 1981 Load: 9.7 t ADT: 147
Rodney Dr
PoorOver: DRAINAGE CANAL
RODNEY DR., East Baton Rouge, LA
Built 1960 Load: 9.7 t ADT: 350
LA0700
PoorOver: INDIAN BAYOU
1.3 MI NORTH OF LA 92, Lafayette, LA
Built 1977 Load: 9.7 t ADT: 1,900
MCMANUS RD
PoorOver: CREEK
LOGMI 5.11 FR 432 TO, Richland, LA
Built 1966 Load: 9.7 t ADT: 150
LA0975
PoorOver: CREEK
4.3 MI N of I-10, St. Martin, LA
Built 1968 Load: 9.7 t ADT: 231
Wright Rd
PoorOver: COULEE
0.7 Mi S of La 14, Vermilion, LA
Built 1965 Load: 9.7 t ADT: 150
Savage Forks Rd
PoorOver: BAYOU ANACOCO
4.1 MI. E. OF LA 464, Vernon, LA
Built 1970 Load: 9.7 t ADT: 200
LONGWOOD RD
PoorOver: DRAIN
1.1 MI E of LA 596, East Carroll, LA
Built 1977 Load: 10.0 t
LA0955
PoorOver: KNIGHTON BAYOU
0.7 Mi N of LA 957, East Feliciana, LA
Built 1966 Load: 10.0 t ADT: 989
Inez T. Rd
PoorOver: ISAAC VEROT COULEE
0.12 Mi NW of Bonin Rd, Lafayette, LA
Built 1970 Load: 10.0 t ADT: 8
LA0449
PoorOver: CREEK
1.0 M E OF LA 1019, Livingston, LA
Built 1955 Load: 10.0 t ADT: 1,467
LA1020
PoorOver: CREEK
0.5 M NW OF LA 1019, Livingston, LA
Built 1930 Load: 10.0 t ADT: 134
LA1199
PoorOver: CREEK
.18 MI. N OF LA488, Rapides, LA
Built 1965 Load: 10.0 t ADT: 362
LA1129
PoorOver: SIMALUSA CREEK
2.3 M N OF LA 40, St. Tammany, LA
Built 1956 Load: 10.0 t ADT: 2,611
N. Brickyard Rd
PoorOver: CREEK
3.8 MI NW OF RT 190, Tangipahoa, LA
Built 1975 Load: 10.0 t ADT: 325
Stateline Rd
PoorOver: CREEK
4 MI NW OF JCT 51 & 1054, Tangipahoa, LA
Built 1986 Load: 10.0 t ADT: 40
ROCKY BRANCH RD
PoorOver: BAYOU D'ARBONNE
1.1 MI. W. INT. 489, Union, LA
Built 1974 Load: 10.0 t ADT: 117
Russ Rd
PoorOver: ISLE MARRONE CANAL
1.75 Mi. W of LA 35, Vermilion, LA
Built 1978 Load: 10.0 t ADT: 30
George Jenkins rd
PoorOver: BARRY'S CREEK
1.0 MI.N.OF.LA.16, Washington, LA
Built 1960 Load: 10.0 t ADT: 305
Showing 11,351-11,400 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 |