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
LA0384
GoodOver: DRAIN
9.2 MI. N OF LA 1144, Calcasieu, LA
Built 1960 Load: 20.1 t ADT: 1,786
Dyer Rd
GoodOver: COMITE RIVER
1.7 Mi. E of LA 67, East Baton Rouge, LA
Built 2002 Load: 20.1 t ADT: 1,636
LA0956
GoodOver: CREEK REDWOOD
2.8 Mi N of LA 412, East Feliciana, LA
Built 1958 Load: 20.1 t ADT: 586
CAUSEWAY BLVD
GoodOver: VETERANS MEMORIAL BLVD.
0.2MI.N.OF I-10, Jefferson, LA
Built 1977 Load: 20.1 t ADT: 26,850
N. Causeway BLVD
GoodOver: VETERANS MEMORIAL BLVD
0.2MI.N.OF I-10, Jefferson, LA
Built 1977 Load: 20.1 t ADT: 21,175
E. University Ave.
GoodOver: VERMILION RIVER
0.02 MI SE OF US 90, Lafayette, LA
Built 1988 Load: 20.1 t ADT: 4,400
FDR 247
GoodOver: BAYOU CLEAR
NO DATA ENTERED, Rapides, LA
Built 1970 Load: 20.1 t ADT: 30
Busnell Rd
GoodOver: Bayou Petit Gaillou
0013 LOG MI FROM INT 001, Terrebonne, LA
Built 1986 Load: 20.1 t ADT: 1,012
Eddie Rd
GoodOver: COULEE
0.6 Mi W of LA 3093, Vermilion, LA
Built 1965 Load: 20.1 t ADT: 125
River Rd
GoodOver: COULEE
0.3 Mi E of US 167, Vermilion, LA
Built 1970 Load: 20.1 t ADT: 250
Parks Rd
GoodOver: Cypress Bayou
1.2 MI. WEST OF CROUCH RD, Bossier, LA
Built 2010 Load: 20.4 t ADT: 2,750
Blanchard Latex Rd
GoodOver: FORONEY BAYOU
2.0M EAST OF LA 169, Caddo, LA
Built 1991 Load: 20.4 t ADT: 39
US0090
GoodOver: CANAL
7.1 MI EAST OF LA 388, Calcasieu, LA
Built 1968 Load: 20.4 t ADT: 13,695
LA0860
GoodOver: CREEK
1.5 MI WEST OF LA 17, Franklin, LA
Built 1939 Load: 20.4 t ADT: 199
LAKESHORE DR
GoodOver: BAYOU ST. JOHN
0.35 N. OF ROBERT E. LEE, Orleans, LA
Built 1989 Load: 20.4 t
LAKESHORE DR
GoodOver: BAYOU ST. JOHN
0.35 N. OF ROBERT E. LEE, Orleans, LA
Built 1989 Load: 20.4 t
LA0112
GoodOver: BAD GULLY BRANCH
0.08 MI. SOUTH OF LA 462, Rapides, LA
Built 1960 Load: 20.4 t ADT: 1,197
W. Lincoln St.
GoodOver: BAYOU TESSON
0.2 Mi. W. La 182, St. Landry, LA
Built 1965 Load: 20.4 t ADT: 500
LA0660
GoodOver: ST LOUIS CANAL
3.0 MI NORTH OF LA 24, Terrebonne, LA
Built 1958 Load: 20.4 t ADT: 10,321
Suire Rd
GoodOver: LAPORT COULEE
0.1 MI. S OF LA 14, Vermilion, LA
Built 2014 Load: 20.4 t ADT: 574
Prairie Rd
GoodOver: BULL HOLE CANAL
1.2 Mi N of Community Rd, Vermilion, LA
Built 2000 Load: 20.4 t ADT: 241
Faulk Rd
GoodOver: Coulee
2.5 Mi. E. of La 13, Acadia, LA
Built 2001 Load: 20.7 t ADT: 288
Roy Rd
GoodOver: LOGAN BAYOU
1.4 MI. NO. OF LA 173, Caddo, LA
Built 1982 Load: 20.7 t ADT: 200
UNITED GAS RD NO 3
GoodOver: BLACK BAYOU TRIB
1.0 M EAST OF LA 1, Caddo, LA
Built 1991 Load: 20.7 t ADT: 39
LA 3064
GoodOver: DAWSON CREEK
0.4 M SOUTH OF LA427, East Baton Rouge, LA
Built 2013 Load: 20.7 t ADT: 12,019
Mt Plesant Zachary
GoodOver: COOPER BAYOU
1.25 MI WEST US 61 INT., East Baton Rouge, LA
Built 1966 Load: 20.7 t ADT: 114
Peairs Rd
GoodOver: WIND BAYOU
4.1 MI.E.LA64,LA410, East Baton Rouge, LA
Built 1964 Load: 20.7 t ADT: 1,149
Ussery Rd.
GoodOver: BEAR CREEK
1.09 M. W. OF US 165, Grant, LA
Built 1987 Load: 20.7 t ADT: 90
LAPALCO BLVD
GoodOver: AMES CANAL
0.3 MI.W.OF AMES BL, Jefferson, LA
Built 1970 Load: 20.7 t ADT: 2,000
LA0001
GoodOver: MARSH
LA 1 1.5 MILES NORTH OF B, Lafourche, LA
Built 2009 Load: 20.7 t ADT: 3,305
US0190
GoodOver: DRAIN
0.4 M E OF LA 441, Livingston, LA
Built 1932 Load: 20.7 t ADT: 4,992
US0190
GoodOver: DRAIN
1.6 M W OF LA 43, Livingston, LA
Built 1920 Load: 20.7 t ADT: 4,992
NFSR 307
GoodOver: SHEARDS BRANCH
NATIONAL FOREST ROAD, Natchitoches, LA
Built 2003 Load: 20.7 t ADT: 30
FSR 141
GoodOver: BEAVER CREEK
NO DATA ENTERED, Rapides, LA
Built 2001 Load: 20.7 t ADT: 30
WILLIAMS LANE
GoodOver: CYPRESS CREEK
LOGMILE 0.53 FR 1DE TO 2D, Richland, LA
Built 1999 Load: 20.7 t ADT: 70
LA0118
GoodOver: GOODSON CREEK RELIEF
6.11 MILE EAST OF US 171, Sabine, LA
Built 1985 Load: 20.7 t ADT: 1,471
US0190
GoodOver: DRAIN
0.7 MI EAST OF LA 757, St. Landry, LA
Built 1976 Load: 20.7 t ADT: 15,172
W. Bertheaud Ave.
GoodOver: BAYOU TESSON
0.4 Mi W. of La 182, St. Landry, LA
Built 1997 Load: 20.7 t ADT: 2,000
ALBRITTON RD
GoodOver: FRANCIS CREEK
2.9 MI NW of LA 15, Union, LA
Built 1990 Load: 20.7 t ADT: 46
LA1246
GoodOver: VERMILION RIVER
0.1 MI W. OF LA 82, Vermilion, LA
Built 1992 Load: 20.7 t ADT: 80
FSR 555
GoodOver: LITTLE BEAR CREEK
NO DATA ENTERED, Winn, LA
Built 1999 Load: 20.7 t ADT: 100
NFSR
GoodOver: COULEY CREEK TRIBUTARY
NO DATA ENTERED, Winn, LA
Built 2002 Load: 20.7 t ADT: 50
Retriever Road
GoodOver: Simmons Gully
1.40 Mi. S. of LA 1115, Acadia, LA
Built 2019 Load: 20.9 t ADT: 48
LA0098
GoodOver: LONG POINT GULLY
1.3 MI EAST OF 3070, Acadia, LA
Built 1952 Load: 20.9 t ADT: 729
LA0368
GoodOver: BAYOU DES CANNES RELIEF
1.8 Mi W. of La 91, Acadia, LA
Built 1954 Load: 20.9 t ADT: 598
LA0429
GoodOver: DUTCHTOWN DRAIN
1.9 M NE of LA 30&LA 73, Ascension, LA
Built 1957 Load: 20.9 t ADT: 9,071
LA0022
GoodOver: NEW RIVER CANAL
LA0022, Ascension, LA
Built 1959 Load: 20.9 t ADT: 11,980
LA0022
GoodOver: PIERRES DRAINAGE
1.0 M SW of LA 22&LA 16, Ascension, LA
Built 1960 Load: 20.9 t ADT: 8,068
LA0939
GoodOver: BAYOU FRANCOIS
0.8 M SE of US 61, Ascension, LA
Built 1962 Load: 20.9 t ADT: 8,203
LA0029
GoodOver: BAYOU BOEUF
1.87 MI. NORTH OF LA 106, Avoyelles, LA
Built 1952 Load: 20.9 t ADT: 2,321
Showing 6,851-6,900 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 |