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
I0010
FairOver: SHATTUCK ST
1.5 MI W OF US 171, Calcasieu, LA
Built 1963 Load: 31.8 t ADT: 11,437
Standpipe Rd
FairOver: BAYOU D'ARBONNE
1.7 MI. W. OF US 79, Claiborne, LA
Built 1997 Load: 31.8 t ADT: 120
LA0408
FairOver: BAYOU
0.1 M E of I-110&LA 408, East Baton Rouge, LA
Built 1976 Load: 31.8 t ADT: 26,976
I0110
FairOver: WYANDOTTE ST. ON RAMP
I0110, East Baton Rouge, LA
Built 1970 Load: 31.8 t ADT: 8,250
Seymore Rd
FairOver: TURKEY CREEK
0.5 MI FROM 575 TO 576, Franklin, LA
Built 1987 Load: 31.8 t ADT: 80
I0010
FairOver: BAYOU GROSSE TETE
I0010, Iberville, LA
Built 1972 Load: 31.8 t ADT: 557
I0010
FairOver: BAYOU GROSSE TETE
77 FT E OF LA 77, Iberville, LA
Built 1972 Load: 31.8 t ADT: 557
US0090
FairOver: DRAIN CANAL
4.0 MI WEST OF US 90B, Jefferson, LA
Built 1953 Load: 31.8 t ADT: 49,920
US0061
FairOver: KENNER O'PASS RR
0.1 MI EAST OF LA 611-9, Jefferson, LA
Built 1976 Load: 31.8 t ADT: 28,780
US0061
FairOver: KENNER O'PASS
0.1 MI EAST OF LA 611-9, Jefferson, LA
Built 1976 Load: 31.8 t ADT: 25,193
LA3046
FairOver: LA SOU/KCS RR & CLAIBORN
0.8 MI N OF US 90, Jefferson, LA
Built 1957 Load: 31.8 t ADT: 6,768
LA3139
FairOver: LA SOUTH & KCS. RAILROAD
.8 MI EAST OF LA 3152, Jefferson, LA
Built 1984 Load: 31.8 t ADT: 55,872
I0010
FairOver: BONNABEL BLVD.
6.0 MI EAST OF LA 49, Jefferson, LA
Built 1966 Load: 31.8 t ADT: 80,773
32nd St
FairOver: DUNCAN CANAL
0.5 MI W OF WILLIAMS BLVD, Jefferson, LA
Built 1984 Load: 31.8 t
LA3073
FairOver: VERMILION RIVER
0.6 MI0. WEST OF LA 3095, Lafayette, LA
Built 1986 Load: 31.8 t ADT: 46,837
E. Martial Ave.
FairOver: COULEE
0.90 Mi NW of LA 339, Lafayette, LA
Built 1976 Load: 31.8 t ADT: 3,080
I0020
FairOver: BAYOU MACON
3.0 MI WEST OF LA 577, Madison, LA
Built 1971 Load: 31.8 t ADT: 31,481
I0020
FairOver: BAYOU MACON
3.0 MI WEST OF LA 577, Madison, LA
Built 1971 Load: 31.8 t ADT: 31,481
LA0119
FairOver: BAYOU CYPRE
9.49 MI. NORTH OF LA 8, Natchitoches, LA
Built 1964 Load: 31.8 t ADT: 189
Lake Forest BLVD
FairOver: BENSON CANAL
0.3 MI. E. OF CROWDE, Orleans, LA
Built 1975 Load: 31.8 t
STUBBS-RITCHIE RD
FairOver: DRAIN TO LITTLE BY.BOEUF
2.6 MI. N. HWY. 80, Ouachita, LA
Built 1980 Load: 31.8 t ADT: 90
LA0454
FairOver: PILLARS CREEK
4.85 MI. SOUTH OF LA 107, Rapides, LA
Built 1947 Load: 31.8 t ADT: 226
Messina Rd
FairOver: BAYOU BOEUF
1.01 MI. SOUTH OF LA 28, Rapides, LA
Built 1989 Load: 31.8 t ADT: 260
Cotton Island Rd
FairOver: FLAGON BAYOU
4 MI NORTH OF HOLLOWAY, Rapides, LA
Built 2005 Load: 31.8 t ADT: 200
US0084
FairOver: RED RIVER
1.49 M EAST OF LA 1, Red River, LA
Built 1990 Load: 31.8 t ADT: 8,296
LA0132
FairOver: CREEK
.15 MI EAST OF US 425, Richland, LA
Built 1948 Load: 31.8 t ADT: 703
LA0132
FairOver: CREEK
.6 MI EAST OF US 425, Richland, LA
Built 1948 Load: 31.8 t ADT: 703
US0171
FairOver: BAYOU SAN PATRICIO
2.6 MI. NORTH OF LA 483, Sabine, LA
Built 1977 Load: 31.8 t ADT: 3,585
US0090
FairOver: SELLERS CANAL
5.6 MI EAST OF LA 633, St. Charles, LA
Built 1953 Load: 31.8 t ADT: 49,920
US0190
FairOver: LITTLE TECHE BAYU
3.41 MI E of I-49, St. Landry, LA
Built 1951 Load: 31.8 t ADT: 21,939
LA0092
FairOver: TECHE BAYOU
0.49 MI E OF LA 31, St. Martin, LA
Built 1984 Load: 31.8 t ADT: 4,071
I0010
FairOver: RAMP A. ON RAMP
0.37 Mi W of LA 3177, St. Martin, LA
Built 1971 Load: 31.8 t ADT: 970
I0010
FairOver: RAMP D. ON RAMP
4.8 MI EAST OF LA 347, St. Martin, LA
Built 1971 Load: 31.8 t ADT: 970
LA0014
FairOver: COULEE
1.40 MI W. OF LA 331, Vermilion, LA
Built 1999 Load: 31.8 t ADT: 12,059
LA0111
FairOver: BAYOU ANACOCO
14.0 MI SOUTH OF LA 8, Vernon, LA
Built 1981 Load: 31.8 t ADT: 1,480
LA3124
FairOver: BOGUE LUSA CREEK
LA3124, Washington, LA
Built 1950 Load: 31.8 t ADT: 5,213
LA0437
FairOver: BOGUE CHITTO RIVER
LA0437, Washington, LA
Built 1970 Load: 31.8 t ADT: 2,058
LA1072
FairOver: LAWRENCE CREEK
LA1072, Washington, LA
Built 1975 Load: 31.8 t ADT: 1,105
LA0164
FairOver: DORCHEAT BAYOU
4.64 MI EAST OF LA 163, Webster, LA
Built 1981 Load: 31.8 t ADT: 3,472
LA0001
FairOver: MO PACIFIC RR
LA0001, West Baton Rouge, LA
Built 1966 Load: 31.8 t ADT: 14,751
LA0067
FairOver: REDWOOD CREEK
1.2 Mi N of LA 64, East Baton Rouge, LA
Built 1965 Load: 32.1 t ADT: 14,102
LA0010
FairOver: PRETTY CREEK
0.68 MILES WEST JCT LA 67, East Feliciana, LA
Built 2005 Load: 32.1 t ADT: 3,904
Walker Ferry Rd
FairOver: CLINTON BRANCH TRIB.
4.06 M. E. OF PERRY RD., Grant, LA
Built 1984 Load: 32.1 t ADT: 144
Bear Creek Rd
FairOver: BEAR CREEK
0.5 M. W. OF JCT LA 500, Grant, LA
Built 1984 Load: 32.1 t ADT: 85
East Bradford St
FairOver: HEMPHILL CREEK
LOG MI 0.23 FROM 7 TO 8, LaSalle, LA
Built 1985 Load: 32.1 t ADT: 250
Sycamore St
FairOver: HEMPHILL CREEK
0.2 M N of US 84/LA 8, LaSalle, LA
Built 1984 Load: 32.1 t ADT: 250
Goldonna Rd
FairOver: CHEE CHEE CREEK
0.49 M. NE OF END LA 1226, Natchitoches, LA
Built 1984 Load: 32.1 t ADT: 133
MIRABEAU AVE
FairOver: BAYOU ST. JOHN
0.1 MI E OF WISNER BLVD., Orleans, LA
Built 2004 Load: 32.1 t
Melder Rd
FairOver: SPRING CREEK
0.5 MI. SOUTH OF LA 112, Rapides, LA
Built 1984 Load: 32.1 t ADT: 375
Hoyt Rd
FairOver: COTILE LAKE
1.11 MI. NW OF LA 1200, Rapides, LA
Built 1969 Load: 32.1 t ADT: 300
Showing 3,651-3,700 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 |