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
Istre Rd
PoorOver: Lazy Point Canal
1.1 Mi. W. of La 92, Acadia, LA
Built 1965 Load: 11.8 t ADT: 96
Bordelon Crossing
PoorOver: BAYOU ROUGE
4 MI. SOUTH OF EVERG, Avoyelles, LA
Built 1950 Load: 11.8 t ADT: 80
Lemon B Rd
PoorOver: DRAINAGE BAYOU
2 MI. S. of LA 412, East Baton Rouge, LA
Built 1980 Load: 11.8 t ADT: 105
LA0343
PoorOver: INDIAN BAYOU
0.2 MI NORTH OF LA 342, Lafayette, LA
Built 1957 Load: 11.8 t ADT: 3,757
LA0040
PoorOver: BULL BRANCH
3.3 M E OF LA 445, Tangipahoa, LA
Built 1957 Load: 11.8 t ADT: 2,778
Nuccio Rd
PoorOver: YELLOW WATER RIVER
0.5 NW OF JCT LA442& US51, Tangipahoa, LA
Built 1975 Load: 11.8 t ADT: 1,035
LA0399
PoorOver: CREEK
.55 MI NORTH OF LA 458, Vernon, LA
Built 1964 Load: 11.8 t ADT: 396
LA0091
PoorOver: B. PLAQ. BRULE/ESTHERWOO
1.2 MI N of US 90, Acadia, LA
Built 1975 Load: 12.0 t ADT: 1,617
LA0308
PoorOver: SCULLY CANAL
.6 MI SOUTH OF LA 308 SPU, Lafourche, LA
Built 1954 Load: 12.0 t ADT: 5,198
KITES LANDING RD
PoorOver: WILSON BRANCH
KITES LANDING ROAD, Sabine, LA
Built 1967 Load: 12.0 t ADT: 110
LA0037
PoorOver: GLASS BRANCH
1.6 M SW OF LA 10, St. Helena, LA
Built 1958 Load: 12.0 t ADT: 1,781
POPLAR ST
PoorOver: MILL CREEK
0.2 MI SOUTH OF LA 1156, Allen, LA
Built 1965 Load: 12.3 t ADT: 750
Hunt Rd
PoorOver: DRAINAGE BAYOU
0.4 Mi N of Milldale Rd, East Baton Rouge, LA
Built 1965 Load: 12.3 t ADT: 220
LA0182
PoorOver: SANDAGER CANAL
2.5 MI SE OF LA 320, Iberia, LA
Built 1930 Load: 12.3 t ADT: 6,242
FREELAND RD
PoorOver: DRAIN
0.4 MI S of LA 102, Jefferson Davis, LA
Built 1979 Load: 12.3 t ADT: 30
US0090
PoorOver: CHEF MENTEUR PASS
3.7 MI EAST OF US 11, Orleans, LA
Built 1930 Load: 12.3 t ADT: 1,215
LA0010
PoorOver: BAYOU MORRIS
0.9 M E of LA 417&LA 10, Pointe Coupee, LA
Built 1923 Load: 12.3 t ADT: 15
HALES RD
PoorOver: HURRICANE CREEK
LOGMI 0.54 FR 0DE TO, Richland, LA
Built 1966 Load: 12.3 t ADT: 230
LA0421
PoorOver: THOM CREEK
0.8 M E of LA 957&LA 421, West Feliciana, LA
Built 1968 Load: 12.3 t ADT: 739
LA0118
PoorOver: CREEK
3.7 MILES WEST OF LA 117, Natchitoches, LA
Built 1976 Load: 12.4 t ADT: 1,471
BOUNDARY RD
PoorOver: SIX MILE CREEK
0.75 MILES EAST OF LA 399, Vernon, LA
Built 1950 Load: 12.4 t ADT: 240
Piney Woods Rd
PoorOver: SIX MILE CREEK
4.7 MI W OF LA 9, Bienville, LA
Built 1977 Load: 12.5 t ADT: 30
LA0038
PoorOver: PETERS CREEK
1.0 M E OF LA 441, St. Helena, LA
Built 1952 Load: 12.5 t ADT: 1,535
McLIN Rd
PoorOver: DUTCHMAN CREEK
1.4MI FROM LA 449, St. Helena, LA
Built 1964 Load: 12.5 t ADT: 70
Jarrell town Rd
PoorOver: MUSTER GROUND CREEK
1.6 MI. S. OF HWY. 4, Washington, LA
Built 1960 Load: 12.5 t ADT: 473
LA0173
PoorOver: MAHLIN BAYOU
.48 MI EAST OF LA 1, Caddo, LA
Built 1965 Load: 12.6 t ADT: 713
E Flanacher Rd
PoorOver: DRAINAGE BAYOU
3.7 MI.NW.LA64,LA19, East Baton Rouge, LA
Built 1968 Load: 12.6 t ADT: 933
Big Creek Rd
PoorOver: BIG CREEK
LOGMI 1.50 FR 325 TO, Franklin, LA
Built 1976 Load: 12.6 t ADT: 77
ARDOIN COVE ROAD
PoorOver: CREEK
1.2 MI E of LA 101, Jefferson Davis, LA
Built 1968 Load: 12.6 t ADT: 70
AARON ROAD
PoorOver: CHENE BAYOU
2.5 MI W. OF LA 26, Jefferson Davis, LA
Built 1979 Load: 12.6 t ADT: 30
US0080
PoorOver: CREEK
3.1 MI EAST OF LA 33, Lincoln, LA
Built 1952 Load: 12.6 t ADT: 3,395
LA0082
PoorOver: MIDDLE CANAL
11.31 Mi S of LA 3147, Vermilion, LA
Built 1958 Load: 12.6 t ADT: 2,899
Big 4 Rd
PoorOver: COULEE
0.5 Mi S of La 14, Vermilion, LA
Built 1996 Load: 12.6 t ADT: 70
W Esplanade Ave S
PoorOver: CANAL NO. 17
0.1 MI W. OF TULANE DR., Jefferson, LA
Built 1960 Load: 12.7 t
LA0308
PoorOver: BELLE TERRE CANAL
0.5 Mi. S. of LA 943, Ascension, LA
Built 1963 Load: 13.0 t ADT: 1,349
LA1010
PoorOver: LABADIEVILLE DRAIN 2
0.7 Mi. N of LA 398, Assumption, LA
Built 1980 Load: 13.0 t ADT: 111
I0020
PoorOver: STL&SW-KCS RR/WESTERFIEL
1.04 MI EAST LA 1, Bossier, LA
Built 1966 Load: 13.0 t ADT: 45,300
LA3063
PoorOver: DRAINAGE DITCH
0.1 MI S of US 90, Calcasieu, LA
Built 1968 Load: 13.0 t ADT: 1,918
E Achord Rd
PoorOver: DRAINAGE BAYOU
3.0 M E of LA 73, East Baton Rouge, LA
Built 1975 Load: 13.0 t ADT: 1,732
LA0001
PoorOver: LATERAL W15#7A
2.35 M S of LA 417, Pointe Coupee, LA
Built 1957 Load: 13.0 t ADT: 3,289
FDR 287
PoorOver: BRANCH CREEK
NATIONAL FOREST ROAD, Rapides, LA
Built 1963 Load: 13.0 t ADT: 60
LA0132
PoorOver: LITTLE CREEK
4.0 MI EAST OF LA 135, Richland, LA
Built 1972 Load: 13.0 t ADT: 1,913
Phillip St.
PoorOver: BAYOU YARBOR
0.2 Mi E of Brown St, St. Landry, LA
Built 1960 Load: 13.0 t ADT: 200
US0090
PoorOver: MIDDLE MIDDLE PEARL RIVE
2.4 miles east of US 190, St. Tammany, LA
Built 1933 Load: 13.0 t ADT: 1,215
Bennett Rd
PoorOver: CREEK
1 MI NW OF SR 40 EXI, Tangipahoa, LA
Built 1975 Load: 13.0 t ADT: 2,750
LA1231-1
PoorOver: CREOSOTE BRANCH
.44 MI WEST OF US 167, Winn, LA
Built 1968 Load: 13.0 t ADT: 569
LA0372
PoorOver: CREEK
6.7 MI S OF LA 10, Allen, LA
Built 1962 Load: 13.3 t ADT: 435
Telesmar Ave
PoorOver: CLAY CUT BAYOU
1.8 MI SE I-12, US61, East Baton Rouge, LA
Built 1970 Load: 13.3 t ADT: 150
LA0955
PoorOver: Monahan Bayou
1.8 M S of LA 10&LA 955, East Feliciana, LA
Built 1966 Load: 13.3 t ADT: 989
W. Metairie Ave
PoorOver: SONIAT CANAL
.1MI.W.OF DAVID DRIV, Jefferson, LA
Built 1960 Load: 13.3 t
Showing 11,451-11,500 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 |