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
LA0513
FairOver: CREEK
8.3 MI NORTH OF LA 346, De Soto, LA
Built 1975 Load: 23.0 t ADT: 243
I0010
FairOver: DALRYMPLE DR/CITY PK LAK
I0010, East Baton Rouge, LA
Built 1964 Load: 23.0 t ADT: 187,499
I0010
FairOver: WARDS CREEK
I0010, East Baton Rouge, LA
Built 1967 Load: 23.0 t ADT: 32,092
Jefferson Island
FairOver: Deblanc Coulee
1.5 Mi. W. of US 90, Iberia, LA
Built 1960 Load: 23.0 t ADT: 2,868
DOISE ROAD
FairOver: GULLY
1.23 MI. E. OF INT. 37, Jefferson Davis, LA
Built 1981 Load: 23.0 t ADT: 70
Surry St.
FairOver: VERMILION RIVER
0.8 MI EAST OF US 90, Lafayette, LA
Built 1948 Load: 23.0 t ADT: 16,800
LA0022
FairOver: CHINQUAPIN CANAL
3.8 M E OF LA 16, Livingston, LA
Built 1973 Load: 23.0 t ADT: 2,201
I0010
FairOver: GRAVIER STREET
0.5 MI NE OF US 90B, Orleans, LA
Built 1969 Load: 23.0 t ADT: 172,504
Callegan W.
FairOver: DRAIN BAYOU
2.1 MI S.W. OF LA 1, Pointe Coupee, LA
Built 2004 Load: 23.0 t ADT: 70
LA0046
FairOver: BAYOU LA LOUTRE
4.6 MI EAST OF LA 300, St. Bernard, LA
Built 1957 Load: 23.0 t ADT: 1,536
Jeff Deblanc Pkwy
FairOver: TECHE BAYOU
0.4 MI E of LA 31, St. Martin, LA
Built 2001 Load: 23.0 t ADT: 3,818
Barrow St.
FairOver: CANAL
0.3 Mi S of LA 3211, St. Mary, LA
Built 1979 Load: 23.0 t ADT: 500
US0190
FairOver: DRAIN
1.4 M W OF I-55, Tangipahoa, LA
Built 1932 Load: 23.0 t ADT: 14,856
Whiskey Ln Rd
FairOver: PONCHATOULA CREEK BR.
1.0MI SO/JCTLA442WISKEYLN, Tangipahoa, LA
Built 1997 Load: 23.0 t ADT: 1,546
LA0575
FairOver: SHACKLEFORD LAKE
6.8 MI NORTH OF LA 4, Tensas, LA
Built 1978 Load: 23.0 t ADT: 26
MONTICELLO ST
FairOver: WHISKEY CHITTO CREEK
VE 844 414, Vernon, LA
Built 1978 Load: 23.0 t ADT: 10
7th St
FairOver: LITTLE CROOKED CREEK
0.5 MI EAST OF LA 7, Webster, LA
Built 1985 Load: 23.0 t ADT: 1,750
US0171
FairOver: BUCHANAN BAYOU
3.4 MI. S. OF LA 526, Caddo, LA
Built 1953 Load: 23.3 t ADT: 16,911
Huckaby Rd
FairOver: HUCKABY RD., KELLY B.
1.5 MI W OF US 71 IN, Caddo, LA
Built 1980 Load: 23.3 t ADT: 80
Mira-Myrtis Rd
FairOver: BLACK BAYOU LAKE
1 MI. E OF LA. HWY 1, Caddo, LA
Built 1978 Load: 23.3 t ADT: 305
SOUTH POST OAK RD
FairOver: DRAIN
1.2 MI S of US 90, Calcasieu, LA
Built 2002 Load: 23.3 t ADT: 2,599
Old Hermitage Pkwy
FairOver: DRAIN CANAL
.30 MI E. OF GARDERE LN., East Baton Rouge, LA
Built 1984 Load: 23.3 t ADT: 1,572
S. POLK AVE
FairOver: DRAIN CANAL
.4 MI. S. INT. X01, Jackson, LA
Built 1965 Load: 23.3 t ADT: 310
WHITNEY AVE
FairOver: DRAINAGE CANAL
0.1 MI N OF LA 23, Jefferson, LA
Built 2004 Load: 23.3 t ADT: 2,500
Airline Dr
FairOver: DRIVEWAY
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 6,768
Airline Dr
FairOver: LA SOUTHERN RR
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 7,021
N. Causeway BLVD
FairOver: DRIVEWAY
0.61 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 7,378
CAUSEWAY BLVD
FairOver: US 61 & LA 611-9 & CIRCL
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 44,036
LA1130
FairOver: DRAIN
1.0 MI NW OF INT US 190, Jefferson Davis, LA
Built 1964 Load: 23.3 t ADT: 448
South A St.
FairOver: QUEUE DE TORTUE BAYOU
0.25 Mi S of US 90, Lafayette, LA
Built 1983 Load: 23.3 t ADT: 100
MAYO ROAD
FairOver: MORRISON CANAL
0.0 MI.N.OF MORRISON, Orleans, LA
Built 1960 Load: 23.3 t
CAMP RD
FairOver: N CHENIERE CREEK
AT INT LA HWY 546, Ouachita, LA
Built 1979 Load: 23.3 t ADT: 160
BREARD ST
FairOver: YOUNGS BAYOU
BREARD ST. MONROE LA, Ouachita, LA
Built 1961 Load: 23.3 t ADT: 1,500
Klock St
FairOver: BAYOU BOEUF
0.45 MILE EAST OF US 71, Rapides, LA
Built 1997 Load: 23.3 t ADT: 250
LA0787
FairOver: CREEK
.14 MI EAST OF LA 507, Red River, LA
Built 1982 Load: 23.3 t ADT: 198
LA0058
FairOver: PETIT CAILLOU
.01 MI EAST OF LA 56, Terrebonne, LA
Built 1964 Load: 23.3 t ADT: 5,194
LA0017
FairOver: TIGER BAYOU
5.0 MI NORTH OF LA 586, West Carroll, LA
Built 1952 Load: 23.3 t ADT: 2,161
LA0098
FairOver: CREEK
2.81 MI WEST OF LA 97, Acadia, LA
Built 1963 Load: 23.6 t ADT: 1,790
LA0365
FairOver: BAYOU WYKOFF
1.6 MI EAST OF LA 1101, Acadia, LA
Built 1959 Load: 23.6 t ADT: 1,042
LA0092
FairOver: CREEK
1.3 MI. North of LA 1119, Acadia, LA
Built 1962 Load: 23.6 t ADT: 462
LA0095
FairOver: BAYOU WYKOFF
0.6 MI NORTH OF LA 365, Acadia, LA
Built 1963 Load: 23.6 t ADT: 5,275
LA0091
FairOver: RICHARDS GULLY
2.5 Miles North of LA 368, Acadia, LA
Built 1961 Load: 23.6 t ADT: 1,617
LA0113
FairOver: MUD CREEK
0.5 MI. N. OF US 190, Allen, LA
Built 1959 Load: 23.6 t ADT: 1,312
LA0113
FairOver: MUD CREEK
4.1 MI. N. OF US 190, Allen, LA
Built 1959 Load: 23.6 t ADT: 1,312
LA0112
FairOver: SIX MI CR RELIEF
0.2 MI. E. Of LA 377, Allen, LA
Built 1962 Load: 23.6 t ADT: 1,138
LA0112
FairOver: SIX MILE CREEK
0.3 MI E OF LA 377, Allen, LA
Built 1962 Load: 23.6 t ADT: 1,138
LA0112
FairOver: TEN MILE CREEK
1.1 MI. E OF LA377, Allen, LA
Built 1960 Load: 23.6 t ADT: 1,138
LA0935
FairOver: NEW RIVER CANAL
LA0935, Ascension, LA
Built 1960 Load: 23.6 t ADT: 1,790
LA0936
FairOver: NEELEY CANAL
1.5 M E of LA 936&LA 22, Ascension, LA
Built 1962 Load: 23.6 t ADT: 997
LA0112
FairOver: SUGAR CREEK
1.2 MI E of LA 113, Beauregard, LA
Built 1962 Load: 23.6 t ADT: 718
Showing 2,451-2,500 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 |