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
LA0009
FairOver: BEAVER CREEK
10.29MI NORTH OF LA 2 ALT, Claiborne, LA
Built 1953 Load: 47.2 t ADT: 1,775
I0049
FairOver: THOMPSON CREEK
0.16 MI. NORTH OF LA 174, Natchitoches, LA
Built 1985 Load: 47.2 t ADT: 28,142
I0010
FairOver: DRAIN CANAL
2.1 MI EAST OF I-510, Orleans, LA
Built 1967 Load: 47.2 t ADT: 77,962
I0010
FairOver: DRAIN CANAL
2.1 MI EAST OF I-510, Orleans, LA
Built 1967 Load: 47.2 t ADT: 1,600
I0020
FairOver: I20;RAMP 1
1.0 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 47.2 t ADT: 15,642
LA0029
FairOver: Bayou Cocodrie
0.05 MI WEST OF I-49, St. Landry, LA
Built 1987 Load: 47.2 t ADT: 2,163
LA0367
FairOver: GUM POINT GULLY
4.3 MI NORTH OF LA 1113, Acadia, LA
Built 1961 Load: 47.3 t ADT: 2,465
LA0015
FairOver: CREEK
3.5 MI NORTH OF LA 549, Union, LA
Built 1953 Load: 47.3 t ADT: 5,557
LA0399
FairOver: BR. OF WHISKEY CHITTO CR
2.72 MI. SOUTH OF LA 10, Vernon, LA
Built 2001 Load: 47.3 t ADT: 938
Ellerbe Rd
FairOver: ELLERBY RD.,BAYOU PIERRE
270 FT SO INT LA 175, Caddo, LA
Built 1982 Load: 48.0 t ADT: 315
Leonard Rd
FairOver: LEONARD RD OVER BA PIERR
0.8 MI SW OF LA1 RT.#122, Caddo, LA
Built 1983 Load: 48.0 t ADT: 3,900
US0165
FairOver: LITTLE BAYOU
4.6 MI N of LA 101, Jefferson Davis, LA
Built 2017 Load: 48.0 t ADT: 9,883
LA0015
FairOver: OLD RIVER NAV. CANAL
LA0015, Pointe Coupee, LA
Built 1965 Load: 48.0 t ADT: 633
HOLLYSPRINGS EXT
FairOver: WHISKEY CHITTO CREEK
FORT POLK, Vernon, LA
Built 2007 Load: 48.0 t ADT: 120
Sewage Disposal Rd
FairOver: BOONE CREEK
5.5 MI. SE OF US 80, Webster, LA
Built 1988 Load: 48.0 t ADT: 25
Java Rd
FairOver: CANEY BRANCH
4.0 MI SW OF US 80, Webster, LA
Built 1988 Load: 48.0 t ADT: 20
I0010
FairOver: PANAMA CANAL
I0010, Ascension, LA
Built 1975 Load: 48.1 t ADT: 21,372
I0110
FairOver: Patking Lot
00.3 Mi. S. of US 61 Bus, East Baton Rouge, LA
Built 1963 Load: 48.1 t ADT: 2,653
I0010
FairOver: CITY STREETS
2.5 MI EAST OF LA 39, Orleans, LA
Built 1966 Load: 48.1 t ADT: 1,600
MILL ROAD
FairOver: TENSAS RIVER
JUST W OF QUEBEC RD, Tensas, LA
Built 1987 Load: 48.1 t ADT: 50
Gum Ridge Rd
FairOver: DRAINAGE DITCH
0.73 M. NE OF JCT LA 1, Avoyelles, LA
Built 1984 Load: 48.3 t ADT: 170
College Dr
FairOver: DAWSON CREEK
0.1 MI N of LA 427, East Baton Rouge, LA
Built 1968 Load: 48.3 t ADT: 49,656
Mixon Ln
FairOver: CREEK
1.0M NE OF JCT LA 1061&16, Tangipahoa, LA
Built 1993 Load: 48.3 t ADT: 6
505 ROAD
FairOver: ODOM CREEK
VE 812 723, Vernon, LA
Built 2005 Load: 48.3 t ADT: 40
MEADOW LANE
FairOver: BRUSHY BAYOU
0.22 MI W OF US 171, Caddo, LA
Built 1956 Load: 48.6 t ADT: 1,200
OLSON DRIVE
FairOver: OUTFALL CANAL
1 KM S OF BACK GATE, Plaquemines, LA
Built 2003 Load: 48.6 t ADT: 1,000
LA3127
FairOver: SAINT JAMES CANAL
4.6 M EAST OF LA 70&3127, St. James, LA
Built 1988 Load: 48.6 t ADT: 6,703
LA0440
FairOver: DRAIN
1.5 MI. EAST OF US 51, Tangipahoa, LA
Built 1988 Load: 48.6 t ADT: 2,498
LA1249
FairOver: PIPE AT CANAL
2.5 MI S. PUMPKIN C EXIT, Tangipahoa, LA
Built 1995 Load: 48.6 t ADT: 6,110
Adams Cemetery Rd
FairOver: BANISTER CREEK
0.5M W of LA 506, Caldwell, LA
Built 1988 Load: 48.9 t ADT: 90
Tenneco Rd
FairOver: FIVE MILE RD. ,FIVEMILE
1.5 MI. S. OF LA. 2, Claiborne, LA
Built 1957 Load: 48.9 t ADT: 70
I0010
FairOver: S.10TH ST. ON RAMP
I0010, East Baton Rouge, LA
Built 1963 Load: 49.0 t ADT: 8,250
Piat Rd.
FairOver: Parc Perdu Bayou
0.4 Mi E of La 89, Lafayette, LA
Built 1987 Load: 49.0 t ADT: 1,550
LA0034
FairOver: CHENIERE CREEK RELIEF
3.18 MI EAST OF LA 546, Ouachita, LA
Built 1970 Load: 49.0 t ADT: 8,694
I0020
FairOver: I20;RAMP S1
1.4 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 49.0 t ADT: 15,642
I0020
FairOver: I20;RAMP N1
1.5 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 49.0 t ADT: 15,642
I0049
FairOver: GROUND
NORTH I-49 / US 71 INTG., Rapides, LA
Built 1992 Load: 49.0 t ADT: 15,642
I0049
FairOver: LENA-FLATWOODS RD
4.68 MI. NORTH OF LA 8, Rapides, LA
Built 1987 Load: 49.0 t ADT: 11,969
I0020
FairOver: BOONE CREEK
2.33 MI. W. OF LA 7, Webster, LA
Built 1961 Load: 49.0 t ADT: 25,379
LA0026
FairOver: INDIAN BRANCH
1.6 MI E of LA 113, Beauregard, LA
Built 1987 Load: 49.2 t ADT: 2,394
Old Arcadia Rd
FairOver: TRIB TO CROWS CREEK
4.48 MI E OF US 79, Claiborne, LA
Built 1984 Load: 49.2 t ADT: 144
Bible Rd
FairOver: COLEWA BAYOU
1.1 MI S of LA 585, West Carroll, LA
Built 2003 Load: 49.2 t ADT: 88
LA0959
FairOver: SCHLIE BAYOU
0.07 M NW LA 959&LA 958, East Feliciana, LA
Built 1959 Load: 49.6 t ADT: 1,679
PARK RD
FairOver: HICKORY BRANCH
0.2 MI W of US 171, Beauregard, LA
Built 1975 Load: 49.9 t ADT: 4,030
I0020
FairOver: SALINE BAYOU
3.1 MI EAST OF LA 9, Bienville, LA
Built 1963 Load: 49.9 t ADT: 37,514
I0020
FairOver: SAM R FERTITTA STREET
1.0 MI EAST OF US I-49, Caddo, LA
Built 1964 Load: 49.9 t ADT: 98,318
I0020
FairOver: SAM R. FERTITTA STREET
0.24 MI West of LA 3036, Caddo, LA
Built 1964 Load: 49.9 t ADT: 98,318
LA0017
FairOver: CREEK
3.50 M N of LA 4, Franklin, LA
Built 1972 Load: 49.9 t ADT: 4,194
US0090
FairOver: LA 182 & BNSF RR
1 Mile N of LA 3073, Lafayette, LA
Built 2018 Load: 49.9 t ADT: 62,432
US0165
FairOver: LITTLE RIVER RELIEF
2.6 MI SOUTH OF US 84, LaSalle, LA
Built 1956 Load: 49.9 t ADT: 3,518
Showing 6,301-6,350 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 |