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
S. AVENUE F
GoodOver: BAYOU BLANC
0.7 MI. S. OF US 90, Acadia, LA
Built 2016 Load: 52.2 t ADT: 2,112
30TH STREET
GoodOver: DUNCAN CANAL
1.2 MI E OF LOYOLA AVENUE, Jefferson, LA
Built 1999 Load: 52.2 t
US0090
GoodOver: Albertsons Pkwy
0.75 Miles N. of La 182, Lafayette, LA
Built 2018 Load: 52.2 t ADT: 62,432
LA1054
GoodOver: BIG CREEK RELIEF
1.16 MI N OF LA 1061, Tangipahoa, LA
Built 2017 Load: 52.2 t ADT: 1,264
LA0442
GoodOver: TANGIPAHOA RIVER
3.45 MI. E. OF US 51, Tangipahoa, LA
Built 2019 Load: 52.2 t ADT: 1,762
I0210
GoodOver: COVE LANE
1.0 MI W of LA 1138-2, Calcasieu, LA
Built 2015 Load: 52.5 t ADT: 58,320
Beco Rd
GoodOver: NEW RIVER CANAL
0.63 MI. N OF LA 22, Ascension, LA
Built 1998 Load: 52.6 t ADT: 500
LA0015
GoodOver: ASH SLOUGH
0.75 M S of LA 867, Franklin, LA
Built 1988 Load: 52.6 t ADT: 6,896
I0010
GoodOver: ON RAMP I-10W FROM US90
.2 MI EAST OF US 90, Orleans, LA
Built 1967 Load: 52.6 t ADT: 7,620
LA0847
GoodOver: BAYOU LAFOURCHE CUTOFF
1.1 MI W OF LA 133, Caldwell, LA
Built 2018 Load: 52.8 t ADT: 438
THE GROVE BLVD
GoodOver: WARD CREEK
0.2 Mi. W. of I-10, East Baton Rouge, LA
Built 2019 Load: 52.8 t ADT: 450
OLD SPANISH TRAIL
GoodOver: K.C.S.R.R.,VERDINE BAYOU
3.4 MI E of LA 27, Calcasieu, LA
Built 2017 Load: 53.1 t ADT: 6,353
CHEVELLE DR
GoodOver: W BRANCH N FORK WARD CR
0.40 MI N OF LA 426, East Baton Rouge, LA
Built 2023 Load: 53.1 t ADT: 2,505
POLK ST
GoodOver: LITTLE BAYOU BLACK
0.01 MI S of LA 311, Terrebonne, LA
Built 2020 Load: 53.1 t ADT: 3,645
Savoy Rd
GoodOver: BLACK BAYOU
2 MI. NE LA 30, US 61 JCT, Ascension, LA
Built 2002 Load: 53.5 t ADT: 150
FIELD ACCESS
GoodOver: COULEE DES GRUES
SEC 25 T2N R3E, Avoyelles, LA
Built 1997 Load: 53.5 t ADT: 5
I0049
GoodOver: MCCAIN CR
3.77 MI S OF LA 1, Caddo, LA
Built 2016 Load: 53.5 t ADT: 87,567
Claycut Rd
GoodOver: Dawson Creek
0.06 Mi. W. of S. Acadian, East Baton Rouge, LA
Built 2019 Load: 53.5 t ADT: 2,812
US0061
GoodOver: SONI DRAIN CANAL
0.10 MI. WEST OF 3154, Jefferson, LA
Built 1996 Load: 53.5 t ADT: 21,574
I0010
GoodOver: SUBURBAN CANAL
4.0 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 53.5 t ADT: 14,843
I0010
GoodOver: SUBURBAN CANAL
4.1 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 53.5 t ADT: 4,072
LA 16
GoodOver: Tangipahoa River
1.46 Miles E. of US 51, Tangipahoa, LA
Built 2021 Load: 53.5 t ADT: 12,718
Island Rd
GoodOver: Williams Creek
1.9 MI. S. of U.S. 61, West Feliciana, LA
Built 2019 Load: 53.5 t ADT: 52
US 61
GoodOver: Bayou Francois
0.85 M SE of LA 426, Ascension, LA
Built 2020 Load: 53.8 t ADT: 29,303
NEWCOMER ROAD
GoodOver: COON GULLY
0.09 MI E of BEASLEY RD, Calcasieu, LA
Built 2021 Load: 53.8 t ADT: 4
I-10 Service Road
GoodOver: French Branch
0.7 Mi N. of US 190, St. Tammany, LA
Built 2021 Load: 53.8 t ADT: 900
Dogwood Trail
GoodOver: Red Chute Bayou
1.9 MI N OF US80, Bossier, LA
Built 2013 Load: 54.1 t ADT: 7,000
S. Landry Dr
GoodOver: COULEE
0.5 Mi. SW of La 182, Iberia, LA
Built 1986 Load: 54.1 t ADT: 2,725
Kaliste Saloom Rd.
GoodOver: Anselm Coulee
0.07 Mi. NE of La 733, Lafayette, LA
Built 2019 Load: 54.1 t ADT: 14,643
WALKER RD
GoodOver: CHOUDRANT CREEK
0.3 MI. SOUTH OF US 80, Lincoln, LA
Built 2012 Load: 54.1 t ADT: 187
LA0367
GoodOver: PRATHER GULLY
3.1 MI NORTH OF LA 1113, Acadia, LA
Built 1961 Load: 54.4 t ADT: 2,465
Butch Savoy Rd
GoodOver: NEW RIVER
0.01 M N. OF LA 22, Ascension, LA
Built 1999 Load: 54.4 t ADT: 30
Rogers C Rd
GoodOver: SAVERIO CANAL
0.08 MI E. OF LA 937, Ascension, LA
Built 2002 Load: 54.4 t ADT: 25
Sol Hanna Rd
GoodOver: NEW RIVER CANAL
0.10 S. HWY. 935, Ascension, LA
Built 2001 Load: 54.4 t ADT: 25
Braud Rd
GoodOver: BLACK BAYOU
1.6 MI N US 61,LA 621 JCT, Ascension, LA
Built 2001 Load: 54.4 t ADT: 200
Little Prairie Rd
GoodOver: MUDDY CREEK
0.08 MI N OF LA 42, Ascension, LA
Built 2002 Load: 54.4 t ADT: 100
LA1222
GoodOver: MALLARD BAYOU RELIEF
2.07 MI. EAST OF LA 485, Natchitoches, LA
Built 1994 Load: 54.4 t ADT: 94
Randall Rd
GoodOver: CREEK
ON RANDALL ROAD 0.02 MILE, Tangipahoa, LA
Built 2015 Load: 54.4 t ADT: 1,933
LA0705
GoodOver: QUEUE DE TORTUE BAYOU
2.2 MI. W. OF LA 35, Vermilion, LA
Built 2016 Load: 54.4 t ADT: 1,034
LA0089
GoodOver: PARC PERDU BAYOU
0.6 MI. S. OF LA 88, Iberia, LA
Built 2016 Load: 54.8 t ADT: 4,714
LA0008
GoodOver: CREEK
0.68 I. EAST OF LA 119, Rapides, LA
Built 1995 Load: 54.8 t ADT: 1,456
AIRPORT RD
GoodOver: BUHLOW LAKE TRIB.
0.38 MI. WEST OF US 71, Rapides, LA
Built 2005 Load: 54.8 t ADT: 349
LA1120
GoodOver: Desaul Canal
0.8 Mi N. of I-10, Acadia, LA
Built 2017 Load: 55.1 t ADT: 801
LA0621
GoodOver: Goudine Bayou
0.9 M E of LA 73, Ascension, LA
Built 2019 Load: 55.1 t ADT: 7,519
LA0935
GoodOver: NARCISSE BAYOU
0.1 MI EAST OF LA 44, Ascension, LA
Built 2018 Load: 55.1 t ADT: 4,835
LA0012
GoodOver: COWPEN BAYOU
3.3 MI W OF US 171, Beauregard, LA
Built 2020 Load: 55.1 t ADT: 4,041
LA0027
GoodOver: PALMETTO CREEK
1.5 MI S OF US 171, Beauregard, LA
Built 2020 Load: 55.1 t ADT: 4,405
LA0507
GoodOver: CYPRESS CREEK
0.58 MI NE OF LA 147, Bienville, LA
Built 2018 Load: 55.1 t ADT: 148
LA0507
GoodOver: FLAT CYPRESS CREEK
0.36 MI NE OF LA 147, Bienville, LA
Built 2018 Load: 55.1 t ADT: 148
LA0132
GoodOver: CROSS SLOUGH
5.30 M N of LA 875, Franklin, LA
Built 2015 Load: 55.1 t ADT: 431
Showing 11,001-11,050 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 |