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
W. Coleman St.
GoodOver: Bayou Tesson
0.4 Mi W. of La 182, St. Landry, LA
Built 1965 Load: 23.0 t ADT: 500
LA0024
GoodOver: BAYOU CANE
LA0024, Terrebonne, LA
Built 1960 Load: 23.0 t ADT: 23,871
LA0095
GoodOver: DRAIN
0.85 MI NORTH OF LA 35, Acadia, LA
Built 1949 Load: 23.3 t ADT: 1,664
GUIDRY RD
GoodOver: NEZIPIQUE BAYOU RELIEF
1.5 MI N of LA1159, Allen, LA
Built 2011 Load: 23.3 t ADT: 36
N CARPENTERS BR RD
GoodOver: FLAT CREEK RELIEF
3.7 MI SOUTH OF LA 26, Allen, LA
Built 2010 Load: 23.3 t ADT: 250
Lee Dr
GoodOver: BAYOU PIERRE PART
1.1 MILES S/W OF LA 70, Assumption, LA
Built 2007 Load: 23.3 t ADT: 672
Ida Missionary Rd
GoodOver: KELLY BAYOU
1.8M EAST OF US 71, Caddo, LA
Built 1994 Load: 23.3 t ADT: 200
Peachland Lane
GoodOver: HIBBS BAYOU
2.2 W of La 124, Catahoula, LA
Built 1989 Load: 23.3 t ADT: 40
Pride-Baywood Rd
GoodOver: DRAINAGE CANAL
0.2 MI. E. of LA 409, East Baton Rouge, LA
Built 1967 Load: 23.3 t ADT: 1,118
Pride-Baywood Rd
GoodOver: WEST BRANCH MILL CREEK
6.8 MI.NNE.LA37,LA40, East Baton Rouge, LA
Built 1967 Load: 23.3 t ADT: 1,118
LA0460
GoodOver: CREEK
6.7 MI EAST OF LA 127, LaSalle, LA
Built 1978 Load: 23.3 t ADT: 776
18TH ST AT DESIARD
GoodOver: DRAINAGE CANAL
0.7 MI NW of I-20, Ouachita, LA
Built 1996 Load: 23.3 t ADT: 100,000
OLIVER RD
GoodOver: BRYANT BRANCH
1.1 MI NW of I-20, Ouachita, LA
Built 2003 Load: 23.3 t ADT: 4,000
PROSPECT RD
GoodOver: NASHES CREEK
4.07 MI. SOUTH OF LA 474, Sabine, LA
Built 1985 Load: 23.3 t ADT: 300
Straughan Nursery
GoodOver: SCOTT CREEK
1.6 MI NW OF JCT 40&1062, Tangipahoa, LA
Built 2006 Load: 23.3 t ADT: 175
BELSHA RD
GoodOver: DOWDEN CREEK RELIEF
1.3 MILES NORTH OF LA 111, Vernon, LA
Built 2001 Load: 23.3 t ADT: 100
LA0368
GoodOver: CREEK
0.3 MI SE OF LA 755, Acadia, LA
Built 1962 Load: 23.6 t ADT: 394
LA0431
GoodOver: BAYOU FRANCOIS
LA0431, Ascension, LA
Built 1958 Load: 23.6 t ADT: 9,608
LA0931
GoodOver: BAYOU MILLET
1.3 M SW of LA 431&LA 931, Ascension, LA
Built 1963 Load: 23.6 t ADT: 4,000
LA0937
GoodOver: ANDERSON CANAL
1.8 M E of LA 22&LA 935, Ascension, LA
Built 1962 Load: 23.6 t ADT: 1,313
LA0127
GoodOver: MCCLELLEN BRANCH
4.6 MI NW OF LA 125, Caldwell, LA
Built 1962 Load: 23.6 t ADT: 314
LA3006
GoodOver: CYPRESS BAYOU
2.8 M N of LA 19&I -110, East Baton Rouge, LA
Built 1957 Load: 23.6 t ADT: 7,620
Sadler Rd.
GoodOver: COCODRIE BAYOU
0.25 Mi SW of La 115, Evangeline, LA
Built 2009 Load: 23.6 t ADT: 42
LA1161
GoodOver: BAYOU DES CANNES
3.32 MI NORTH OF LA 104, Evangeline, LA
Built 1962 Load: 23.6 t ADT: 2,821
LA0076
GoodOver: BAYOU MARINGOUIN
LA0076, Iberville, LA
Built 1962 Load: 23.6 t ADT: 2,899
LA3000
GoodOver: RAMAH CANAL
0.1 MI N OF I10 RAMP, Iberville, LA
Built 1957 Load: 23.6 t ADT: 965
Wagner Rd
GoodOver: BLOOD RIVER
3.4 MILES NORTH OF JCT US, Livingston, LA
Built 2010 Load: 23.6 t ADT: 450
LA0016
GoodOver: BAYOU KING GEORGE
LA0016, Livingston, LA
Built 1960 Load: 23.6 t ADT: 4,313
LA0042
GoodOver: LOBELL CREEK
1.0 M W OF LA 43, Livingston, LA
Built 1961 Load: 23.6 t ADT: 1,298
LA0040
GoodOver: L NATALBANY REL
2.5 M E OF LA 43, Livingston, LA
Built 1960 Load: 23.6 t ADT: 913
LA0978
GoodOver: BAYOU GROSSE TETE
LA0978, Pointe Coupee, LA
Built 1962 Load: 23.6 t ADT: 1,067
LA0686
GoodOver: SOUTH RELIEF CANL
1.5 MI SOUTH OF LA 347, St. Martin, LA
Built 1959 Load: 23.6 t ADT: 3,212
LA1081
GoodOver: L.BOGUE FALAYA
LA1081, St. Tammany, LA
Built 1960 Load: 23.6 t ADT: 2,000
LA1081
GoodOver: L.BOGUE FALAYA
LA1081, St. Tammany, LA
Built 1960 Load: 23.6 t ADT: 2,000
LA1083
GoodOver: CREEK
6.1 M SW OF LA 41, St. Tammany, LA
Built 1958 Load: 23.6 t ADT: 1,219
LA1083
GoodOver: BULLY BRANCH
2.1 M N OF LA 21, St. Tammany, LA
Built 1958 Load: 23.6 t ADT: 1,219
LA1061
GoodOver: BIG CREEK
0.9 M N OF LA 10, Tangipahoa, LA
Built 1959 Load: 23.6 t ADT: 887
LA1061
GoodOver: BIG CREEK BRANCH
1.2 M N OF LA 10, Tangipahoa, LA
Built 1959 Load: 23.6 t ADT: 887
LA1049
GoodOver: JENNYS BRANCH
LA. 1049, Tangipahoa, LA
Built 1960 Load: 23.6 t ADT: 574
Elmo Rd
GoodOver: TIGRE BAYOU
1.02 MI. W. OF LA 330, Vermilion, LA
Built 2012 Load: 23.6 t ADT: 845
LA0330
GoodOver: RAMSEY CANAL
4.58 MI S. OF LA 82, Vermilion, LA
Built 1959 Load: 23.6 t ADT: 1,814
LA0438
GoodOver: MIDDLE RELIEF
LA0438, Washington, LA
Built 1960 Load: 23.6 t ADT: 688
LA0438
GoodOver: NORTH RELIEF
LA0438, Washington, LA
Built 1960 Load: 23.6 t ADT: 688
LA0438
GoodOver: TOM BRANCH
1.0 M SW OF LA 424, Washington, LA
Built 1962 Load: 23.6 t ADT: 519
LA0439
GoodOver: MEAZELS CREEK
LA0439, Washington, LA
Built 1964 Load: 23.6 t ADT: 1,235
Greenwood Rd
GoodOver: Old Cr
7.2 Mi. S. of LA 66, West Feliciana, LA
Built 2023 Load: 23.6 t ADT: 40
LA0965
GoodOver: CHANEY CREEK M F
LA0965, West Feliciana, LA
Built 1959 Load: 23.6 t ADT: 2,133
LA0965
GoodOver: CHANEY CREEK MF
LA0965, West Feliciana, LA
Built 1959 Load: 23.6 t ADT: 2,133
Highland Rd
GoodOver: LITTLE BAYOU SARA
0.3 MI W of LA 66, West Feliciana, LA
Built 2000 Load: 23.6 t ADT: 210
Sonnier Rd.
GoodOver: CREEK
1.8 MI. WEST OF LA 95, Acadia, LA
Built 2012 Load: 23.7 t ADT: 48
Showing 7,051-7,100 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 |