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
LA1074
FairOver: WRIGHTS CREEK
1.4 M W OF LA 1075, Washington, LA
Built 1958 Load: 25.4 t ADT: 1,186
LA0439
FairOver: DRAIN
2.4 M W OF LA 60, Washington, LA
Built 1955 Load: 25.4 t ADT: 1,235
US0371
FairOver: SAUSMAN CREEK
4.52 MI NORTH OF US 80, Webster, LA
Built 1960 Load: 25.4 t ADT: 8,913
Woodmill Rd
FairOver: TRIB TO TANYARD CREEK
0.1 MI W OF HWY 7, Webster, LA
Built 1978 Load: 25.4 t ADT: 247
LA0421
FairOver: MILL CREEK
LA0421, West Feliciana, LA
Built 1968 Load: 25.4 t ADT: 739
Chester Diez Rd
FairOver: NEW RIVER
0.2 MI E I-10,LA429, Ascension, LA
Built 1970 Load: 25.6 t ADT: 250
LA0070
FairOver: DRAIN
3.3 M NE of LA 1&LA 70, Assumption, LA
Built 1977 Load: 25.6 t ADT: 11,166
1ST PENT CHURCH RD
FairOver: WILD COW CREEK
2.4 MI WEST OF US 171, Beauregard, LA
Built 2006 Load: 25.6 t ADT: 275
1ST PENT CHURCH RD
FairOver: COLE CREEK
2.7 MI W of US 171, Beauregard, LA
Built 2005 Load: 25.6 t ADT: 275
LA0002
FairOver: DRAIN
.19 MI EAST OF LA 3, Bossier, LA
Built 1960 Load: 25.6 t ADT: 4,236
LA0169
FairOver: CREEK
7.2 MI NORTH OF LA 172, Caddo, LA
Built 1984 Load: 25.6 t ADT: 1,540
DUDLEY DRIVE
FairOver: OCKLEY DITCH
2.3 MI N OF LA 511, Caddo, LA
Built 1988 Load: 25.6 t ADT: 200
LOUIS ALLEMAN PKWY
FairOver: FARMERS L AND C CANAL
0.3 MI EAST OF LA 27, Calcasieu, LA
Built 2000 Load: 25.6 t ADT: 100
OLD SPANISH TRAIL
FairOver: CREEK
3.2 MI WEST OF LA 379, Calcasieu, LA
Built 1995 Load: 25.6 t ADT: 5,829
Mt. Olive Rd
FairOver: PANTHER CREEK
2.2 MILES WEST OF LA 9, Claiborne, LA
Built 2009 Load: 25.6 t ADT: 85
US0084
FairOver: BAGET CREEK
5.9 MI EAST OF LA 763, De Soto, LA
Built 1949 Load: 25.6 t ADT: 4,394
Wax Rd
FairOver: DRAUGHAN CREEK
0.4 Mi E. of LA 3034, East Baton Rouge, LA
Built 1967 Load: 25.6 t ADT: 14,420
Port Hudson-Pride
FairOver: COPPER MILL BAYOU
2.6 MI. NW LA64,LA19, East Baton Rouge, LA
Built 1970 Load: 25.6 t ADT: 2,080
Liberty Chapel Rd
FairOver: BLACK CREEK
0.5 M. N. OF JCT. LA 122, Grant, LA
Built 1985 Load: 25.6 t ADT: 45
LA3086
FairOver: BAYOU
2.7 MI N OF LA 99/102, Jefferson Davis, LA
Built 1974 Load: 25.6 t ADT: 369
Meche Rd.
FairOver: CARENCRO BAYOU
1.08 Mi N of LA 1252, Lafayette, LA
Built 1982 Load: 25.6 t ADT: 360
LA3235
FairOver: WETLANDS
S OF LEEVILLE TO JCT LA1, Lafourche, LA
Built 2012 Load: 25.6 t ADT: 3,305
GOODGOIN RD
FairOver: STOWE CREEK
1.2 MILES EAST OF LA33, Lincoln, LA
Built 2013 Load: 25.6 t ADT: 102
LA0016
FairOver: WILLIS BAYOU
1.6 Mi N of LA 42, Livingston, LA
Built 1982 Load: 25.6 t ADT: 10,070
Emmanuel Rd
FairOver: BAYOU BARBUE
4.3 MILES WEST OF LA 490, Natchitoches, LA
Built 1984 Load: 25.6 t ADT: 114
HARRISON AVE
FairOver: CITY PARK LAGOON
0.1MI.W.OF WISNER BL, Orleans, LA
Built 1939 Load: 25.6 t
RED CUT RD
FairOver: WATSON BRANCH
MI E HWY 557, Ouachita, LA
Built 1981 Load: 25.6 t ADT: 270
Solid Waste Rd
FairOver: BAYOU BOEUF
0.1 MI N JCT LA 10-LA 182, St. Landry, LA
Built 1986 Load: 25.6 t ADT: 2,250
US0190
FairOver: YELLOW WATER RIVER
US0190, Tangipahoa, LA
Built 1969 Load: 25.6 t ADT: 14,856
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 25.6 t ADT: 259
E WOODLAWN RANCH R
FairOver: PETIT GAILLOU BAYOU
1.2 MI E OF LA 57, Terrebonne, LA
Built 2011 Load: 25.6 t ADT: 2,248
US0167
FairOver: MIDDLE FORK BAYOU
1.4 MI SOUTH OF SOUTH INT, Union, LA
Built 1952 Load: 25.6 t ADT: 422
LA0014
FairOver: VALCOURT COULEE
0.39 MI W. OF UA 167, Vermilion, LA
Built 1967 Load: 25.6 t ADT: 19,800
Guegnon St.
FairOver: YOUNGS SOUTH COULEE
0.95 M. S. of LA 3267, Vermilion, LA
Built 1965 Load: 25.6 t ADT: 250
Sittig Rd
FairOver: Drainage Canal
0.03 Mi W. of La 13, Acadia, LA
Built 1970 Load: 25.9 t ADT: 2,736
LA3251
FairOver: SMITH BAYOU
2.9 Mi NE of LA 75, Ascension, LA
Built 1969 Load: 25.9 t ADT: 4,016
US0171
FairOver: DRAIN
0.9 MI. N. OF LA 511, Caddo, LA
Built 1959 Load: 25.9 t ADT: 16,933
Pintail Rd
FairOver: MILL CREEK TRIB
0.5M EAST OF JOHNS GIN RD, Caddo, LA
Built 1992 Load: 25.9 t ADT: 57
Pine Grove Rd
FairOver: BUCHANAN BAYOU TRIB
2.5M EAST OF LA 525, Caddo, LA
Built 1991 Load: 25.9 t ADT: 58
BIG WOODS RD
FairOver: CANAL
.3 M N. LA 3063, Calcasieu, LA
Built 2000 Load: 25.9 t ADT: 887
KIRKMAN ST
FairOver: DRAINAGE CANAL
0.1 MI. N. OF 9TH ST, Calcasieu, LA
Built 1928 Load: 25.9 t ADT: 6,422
EDGERLY RD
FairOver: LITTLE INDIAN BAYOU
8.6 MI. N. OF US 90, Calcasieu, LA
Built 2000 Load: 25.9 t ADT: 445
LA0547
FairOver: BRUSHY CREEK
0.68 M W of LA 845, Caldwell, LA
Built 1982 Load: 25.9 t ADT: 606
US0165
FairOver: FISH CREEK
1.6 MI NORTH OF LA 524, Grant, LA
Built 1948 Load: 25.9 t ADT: 7,084
Camp Hardtner Rd.
FairOver: LITTLE CREEK
3.09 M. S. OF JCT. US 165, Grant, LA
Built 1985 Load: 25.9 t ADT: 90
W Esplanade Ave
FairOver: CANAL NO 2
.1 mile west of Transcon., Jefferson, LA
Built 2000 Load: 25.9 t ADT: 1,250
LA3257
FairOver: PAILET CANAL
1.00 MI. WEST OF LA 302, Jefferson, LA
Built 1996 Load: 25.9 t ADT: 876
BETTY ST
FairOver: MAYRONNE CANAL
0.2MI.SOUTH OF MONTG, Jefferson, LA
Built 1970 Load: 25.9 t ADT: 200
LA0395
FairOver: DRAIN
5.4 MI NORTH OF I-10, Jefferson Davis, LA
Built 1957 Load: 25.9 t ADT: 3,596
US0090-B
FairOver: MISSISSIPPI RIVER
US 90B OVER LA 428, Orleans, LA
Built 1957 Load: 25.9 t ADT: 67,143
Showing 2,901-2,950 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 |