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
Brian Rd
Structurally DeficientOver: DRAINAGE BAYOU
3.3 MI N JCT LA.64 L, East Baton Rouge, LA
Built 1965 Load: 12.6 t ADT: 86
SOUTH ST.
Structurally DeficientOver: WELCH DRAINAGE CANAL
0.35 M EAST OF LA 99, Jefferson Davis, LA
Built 1983 Load: 12.6 t ADT: 500
US0080
Structurally DeficientOver: ICG RAILROAD
5.42 MI WEST OF LA 507, Lincoln, LA
Built 1949 Load: 12.6 t ADT: 2,378
Boon Lasseigne Rd
Structurally DeficientOver: Martin Bayou
2.2 Mi. E of La 347, St. Martin, LA
Built 1972 Load: 12.6 t ADT: 63
LA0056
Structurally DeficientOver: BOUDREAUX CANAL
7.2 MI SOUTH OF LA 58, Terrebonne, LA
Built 1959 Load: 12.6 t ADT: 3,872
LA3008
Structurally DeficientOver: HOLDER CREEK
5.4 MI SOUTH OF LA 160, Webster, LA
Built 1972 Load: 12.6 t ADT: 145
LA0160
Structurally DeficientOver: CYPRESS BAYOU
.73 MI EAST OF LA 3, Bossier, LA
Built 1969 Load: 13.0 t ADT: 622
LA0525
Structurally DeficientOver: BOGGY BAYOU
3.0 MI WEST OF US 71, Caddo, LA
Built 1969 Load: 13.0 t ADT: 4,294
LA0514
Structurally DeficientOver: BAYOU CHICOT
1.8 MI EAST OF US 71, Red River, LA
Built 1970 Load: 13.0 t ADT: 772
LA0010
Structurally DeficientOver: BAYOU HA HA
1.7 Miles West of LA 105, St. Landry, LA
Built 1958 Load: 13.0 t ADT: 708
US0090
Structurally DeficientOver: E MIDDLE PEARL RIVER
3 miles east of US 190, St. Tammany, LA
Built 1933 Load: 13.0 t ADT: 1,215
LA0022
Structurally DeficientOver: TANGIPAHOA RIVER
LA0022, Tangipahoa, LA
Built 1939 Load: 13.0 t ADT: 6,435
Stateline Rd
Structurally DeficientOver: CREEK
4.1 MI NW OF JCT 51&, Tangipahoa, LA
Built 1960 Load: 13.0 t ADT: 40
LA0582
Structurally DeficientOver: CREEK
2.5 MI SOUTH OF LA 2, West Carroll, LA
Built 1956 Load: 13.0 t ADT: 355
Manchac Acres Rd.
Structurally DeficientOver: Cotton Bayou
1.3 MI N of LA 42, Ascension, LA
Built 1970 Load: 13.3 t ADT: 75
LA0501
Structurally DeficientOver: DRAIN
.01 MI NORTH OF LA 4, Bienville, LA
Built 1960 Load: 13.3 t ADT: 218
I0020
Structurally DeficientOver: LK SHORE DR&KESRR
.5 MI EAST OF US 80, Caddo, LA
Built 1965 Load: 13.3 t ADT: 98,318
Angus Ave
Structurally DeficientOver: DRAINAGE CANAL
0.2 Mi W. of LA 67, East Baton Rouge, LA
Built 1966 Load: 13.3 t ADT: 722
LA0316
Structurally DeficientOver: ST LOUIS CANAL
1.8 MI NORTH OF LA 182, Lafourche, LA
Built 1972 Load: 13.3 t ADT: 1,292
LA0561
Structurally DeficientOver: BOEUF RIVER
11.0 MI SOUTH OF LA 132, Richland, LA
Built 1952 Load: 13.3 t ADT: 1,543
TOM QUAVE RD
Structurally DeficientOver: CHERRYWINCHE CREEK
0.7 MI E of SAM CLOUD RD, Allen, LA
Built 1983 Load: 13.6 t ADT: 10
LA0808
Structurally DeficientOver: INDIAN CREEK
2.5 MI EAST OF LA 521, Claiborne, LA
Built 1949 Load: 13.6 t ADT: 123
LA0001
Structurally DeficientOver: BAYOU PLAQUEMINE
0.20 MI SE OF LA 77, Iberville, LA
Built 1950 Load: 13.6 t ADT: 10,843
Serenity Rd.
Structurally DeficientOver: COULEE
0.3 Mi. West of Bonin Rd, Lafayette, LA
Built 1972 Load: 13.6 t ADT: 40
LA0308
Structurally DeficientOver: VALENTINE CANAL
6.3 MI NORTH OF LA 657, Lafourche, LA
Built 1964 Load: 13.6 t ADT: 8,181
LA1206
Structurally DeficientOver: CREEK
1.32 MILES EAST OF LA 115, Rapides, LA
Built 1975 Load: 13.6 t ADT: 1,042
LA0120
Structurally DeficientOver: BAYOU SCIE RELIEF 2
3.5 MI EAST OF US 171, Sabine, LA
Built 1960 Load: 13.6 t ADT: 235
Coleman Rd
Structurally DeficientOver: POLE BRIDGE BR.
BOB COLEMAN ROAD, Tangipahoa, LA
Built 1960 Load: 13.6 t ADT: 22
Old Genessee Rd
Structurally DeficientOver: CREEK
3 MI SE OF LA RT 442, Tangipahoa, LA
Built 1960 Load: 13.6 t ADT: 745
Travis Ln
Structurally DeficientOver: BIG CREEK
2 MI SW OF JCT 440 & 1061, Tangipahoa, LA
Built 1960 Load: 13.6 t ADT: 8
Brock Rd
Structurally DeficientOver: LITTLE SILVER CREEK
0.7 MI NE OF JCT 38, Tangipahoa, LA
Built 1960 Load: 13.6 t ADT: 4
Braud Rd
Structurally DeficientOver: BLACK BAYOU
1.8 MI N US 61,LA621, Ascension, LA
Built 1980 Load: 13.9 t ADT: 500
LA0009
Structurally DeficientOver: MILL CREEK
2.3 MI. SOUTH OF LA 155, Bienville, LA
Built 1971 Load: 13.9 t ADT: 1,172
BRYAN ST
Structurally DeficientOver: GUM SLOUGH
0.01 MI. E. OF INT., Calcasieu, LA
Built 1974 Load: 13.9 t
Pride-Baywood Rd
Structurally DeficientOver: KIDD'S CREEK
6.1 MI. E. of LA 409, East Baton Rouge, LA
Built 1960 Load: 13.9 t ADT: 451
LA0151
Structurally DeficientOver: CYPRESS CREEK
2.65 MI NORTH OF LA 145, Lincoln, LA
Built 1961 Load: 13.9 t ADT: 527
US0011
Structurally DeficientOver: LAKE PONTCHARTRAIN
.01 MI NORTH OF I-10, Orleans, LA
Built 1938 Load: 13.9 t ADT: 3,912
LA0507
Structurally DeficientOver: STANLEY CREEK
2.3 MI NORTH OF LA 786, Red River, LA
Built 1974 Load: 13.9 t ADT: 589
LA3094
Structurally DeficientOver: KANSAS CITY SOUTHERN RR
3.6 MI NORTH OF LA 511, Caddo, LA
Built 1977 Load: 14.3 t ADT: 14,003
LA0518
Structurally DeficientOver: WHITE CREEK
1.37 MI NORTH OF LA 519, Claiborne, LA
Built 1958 Load: 14.3 t ADT: 331
LA3015
Structurally DeficientOver: BAYOU CASTOR RELIEF
1.94 MI EAST OF LA 5, De Soto, LA
Built 1971 Load: 14.3 t ADT: 1,157
Connell Village Ln
Structurally DeficientOver: N. BRANCH WARDS CREEK
0.10 MI W OF AIRLINE HWY, East Baton Rouge, LA
Built 1988 Load: 14.3 t ADT: 6,180
Milldale Rd
Structurally DeficientOver: DRAINAGE CANAL
2.0 M W OF LA 409, East Baton Rouge, LA
Built 1959 Load: 14.3 t ADT: 377
FDR 360
Structurally DeficientOver: L'IVROGNE BAYOU
6.5 M. WSW. OF GORUM, Natchitoches, LA
Built 1978 Load: 14.3 t ADT: 30
LA0062
Structurally DeficientOver: CRAINS CREEK
LA0062, Washington, LA
Built 1959 Load: 14.3 t ADT: 1,205
Normand Rd
Structurally DeficientOver: DRAINAGE DITCH
1.24 MI. N. OF LARGE RD., Avoyelles, LA
Built 1983 Load: 14.5 t ADT: 90
Swan Lake Rd
Structurally DeficientOver: Red Chute Bayou
0.7 M EAST OF POOLE ROAD, Bossier, LA
Built 1989 Load: 14.5 t ADT: 20
LA0506
Structurally DeficientOver: BANISTER CREEK
6.6 MI WEST OF US 165, Caldwell, LA
Built 1971 Load: 14.5 t ADT: 306
W.Dale Plantation
Structurally DeficientOver: B. PIERRE,PH RD 402
3.0 MI W OF LA1, Red River, LA
Built 1963 Load: 14.5 t ADT: 12
Stein Rd
Structurally DeficientOver: YELLOW WATER RIVER
0.8 MI N OF LA 1040, Tangipahoa, LA
Built 1960 Load: 14.5 t ADT: 4
Showing 12,401-12,450 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 |