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: OFF RP FROM I 10 WEST
2.3 MI W OF US 610, Jefferson, LA
Built 1967 Load: 34.5 t ADT: 15,955
Savoy Rd.
FairOver: ANSELM COULEE
1.85 Mi W of LA 339, Lafayette, LA
Built 2002 Load: 34.5 t ADT: 343
E. Butcher Switch
FairOver: OAK COULEE
1.80Mi E of I-49, Lafayette, LA
Built 2006 Load: 34.5 t ADT: 1,003
I0020
FairOver: TENSAS-RIVER
7.3 MI EAST OF LA 577, Madison, LA
Built 1975 Load: 34.5 t ADT: 31,481
LA0493
FairOver: BAYOU BREVELLE
.44 MI. E OF INT LA1, Natchitoches, LA
Built 1949 Load: 34.5 t ADT: 294
I0010
FairOver: DWYER CANAL/DWYER RD
.7 MI EAST OF US 90, Orleans, LA
Built 1967 Load: 34.5 t ADT: 121,599
LA0001
FairOver: CHERRY CREEK
2.82 MI. N OF N INT LA8, Rapides, LA
Built 1963 Load: 34.5 t ADT: 748
I0049
FairOver: CITY STREETS, UP RR
0.89 MI. SOUTH OF US 71, Rapides, LA
Built 1992 Load: 34.5 t ADT: 15,642
LA0133
FairOver: DRAINAGE CANAL
1.6 MI NORTH OF LA 132, Richland, LA
Built 1976 Load: 34.5 t ADT: 975
LA0118
FairOver: LEWING CREEK
1.85 MI. EAST OF US 171, Sabine, LA
Built 1977 Load: 34.5 t ADT: 1,471
LA0191
FairOver: WALL CREEK
1.3 MI SOUTH OF LA 474, Sabine, LA
Built 1976 Load: 34.5 t ADT: 2,785
LA0191
FairOver: NEGREET-CREEK
.05 MI NORTH OF LA 476, Sabine, LA
Built 1976 Load: 34.5 t ADT: 2,391
LA0191
FairOver: BAYOU LANANA
2.13 MI. NORTH OF LA 6, Sabine, LA
Built 1968 Load: 34.5 t ADT: 1,210
LA0010
FairOver: AMITE RIVER @ DARLINGTON
1.5 M W OF LA 38, St. Helena, LA
Built 1963 Load: 34.5 t ADT: 2,534
US0190
FairOver: ABITA RIVER
2.1 MILES NORTH OF I-12, St. Tammany, LA
Built 1975 Load: 34.5 t ADT: 45,574
US0190
FairOver: PONCHITOLAWA CR
US 190, St. Tammany, LA
Built 1976 Load: 34.5 t ADT: 4,005
I0059
FairOver: YELLOW BAYOU
I0059, St. Tammany, LA
Built 1962 Load: 34.5 t ADT: 36,841
LA0010
FairOver: TANGIPAHOA RIVER
0.7 Miles East of US 51, Tangipahoa, LA
Built 1966 Load: 34.5 t ADT: 3,768
I0012
FairOver: ICG RAILROAD
I0010, Tangipahoa, LA
Built 1975 Load: 34.5 t ADT: 58,377
LA0577
FairOver: LITTLE CREEK
4.2 MI EAST OF LA 585, West Carroll, LA
Built 1971 Load: 34.5 t ADT: 365
LA0013
FairOver: Prime Gully
.3 MI NORTH OF LA 1115, Acadia, LA
Built 1951 Load: 34.7 t ADT: 6,068
I0010
FairOver: BAYOU CONWAY
0.3 M SE of LA 44, Ascension, LA
Built 1979 Load: 34.7 t ADT: 25,735
LA0027
FairOver: COWPEN CREEK
7.7 MI NORTH OF LA 110, Beauregard, LA
Built 2003 Load: 34.7 t ADT: 3,333
Mott Rd
FairOver: Boggs Creek Trib
3.6 MI N OF INT. LA HWY 2, Bossier, LA
Built 1986 Load: 34.7 t ADT: 200
WOOLWORTH RD
FairOver: BOGGY BAYOU RELIEF
1.6 MI. N. OF LA 525, Caddo, LA
Built 2016 Load: 34.7 t ADT: 3,700
WOOLWORTH RD
FairOver: BOGGY BAYOU
2.62 MI N OF LA 525, Caddo, LA
Built 2016 Load: 34.7 t ADT: 3,700
LA0526
FairOver: GILMER BAYOU
2.0 MI W JCT US 171(LA526, Caddo, LA
Built 1983 Load: 34.7 t ADT: 17,579
US0171
FairOver: CREEK
1.1 MI S OF US 84, De Soto, LA
Built 2009 Load: 34.7 t ADT: 4,494
Port Hudson Cem Rd
FairOver: COOPER BAYOU
0.7 MI W OF US 61, East Baton Rouge, LA
Built 1968 Load: 34.7 t ADT: 2,200
LA7281
FairOver: FRANCOIS COULEE
1.7 Mi S of La 98, Lafayette, LA
Built 1982 Load: 34.7 t ADT: 8,684
LITTLE MISSOURI LP
FairOver: CYPRESS BAYOU
1.6 MI NORTH INT. 157, Morehouse, LA
Built 1986 Load: 34.7 t ADT: 320
Roosevelt Mall Dr.
FairOver: CITY PARK LAGOON
0.0MIW.OF MUSEUM OF, Orleans, LA
Built 1939 Load: 34.7 t
CADEVILLE CUTOFF
FairOver: S CHENIERE CR AT INVRT12
1 MILE S CADEVILLE, Ouachita, LA
Built 1984 Load: 34.7 t ADT: 178
DALLAS DR
FairOver: PATRICK BAYOU
2 MI. N. OF SICARD, Ouachita, LA
Built 1986 Load: 34.7 t ADT: 1,166
Dewey Marks Ln.
FairOver: Wauksha Bayou
0.2 Mi SW. of La 359, St. Landry, LA
Built 1994 Load: 34.7 t ADT: 50
I0010
FairOver: RAMP C. OFF RAMP
4.61 MI EAST OF LA 347, St. Martin, LA
Built 1971 Load: 34.7 t ADT: 932
5th St
FairOver: FRANKLIN CANAL
0.2 Mi N of Willow St., St. Mary, LA
Built 1960 Load: 34.7 t ADT: 300
LA0020
FairOver: DONNER CANAL
2.2 MI EAST OF LA 182, Terrebonne, LA
Built 1984 Load: 34.7 t ADT: 2,471
Pine St
FairOver: MILE CREEK
0.3 MI N OF HWY 79-8, Webster, LA
Built 1935 Load: 34.7 t ADT: 158
HUNT RD
FairOver: BARNES CREEK
0.8 M E OF GEORGE SMART R, Beauregard, LA
Built 2004 Load: 35.0 t ADT: 80
LA3105
FairOver: BENOIT BAYOU
0.9 MI. N. OF I-220, Bossier, LA
Built 2005 Load: 35.0 t ADT: 32,603
Airline Dr.
FairOver: DRAIN
1.7 MI N. OF I-220, Bossier, LA
Built 2005 Load: 35.0 t ADT: 32,603
Smith Rd
FairOver: Red Chute Bayou
0.3 MI. SOUTH OF LA 527, Bossier, LA
Built 1986 Load: 35.0 t ADT: 250
SOUTHERN AVE
FairOver: OCKLEY DITCH
2.3 M N OF LA 511, Caddo, LA
Built 1965 Load: 35.0 t ADT: 8,132
WELCOME RD
FairOver: MARSH BAYOU
4.5 MI EAST OF US 171, Calcasieu, LA
Built 2004 Load: 35.0 t ADT: 182
Mundy Rd
FairOver: TRIBUTARY TO BUFFALO BAY
1.41 MI N. OF US 84, De Soto, LA
Built 2001 Load: 35.0 t ADT: 265
TAYLOR ST
FairOver: CORPORATION CANAL
0.14 MI W OF HIGHLAND RD, East Baton Rouge, LA
Built 2018 Load: 35.0 t ADT: 281
US0165
FairOver: UP RR, SANDY CREEK
.36 MI. N. OF S. JCT LA 8, Grant, LA
Built 2007 Load: 35.0 t ADT: 6,586
OLIVE GROVE RD
FairOver: CASTOR CREEK
0.4 MI NE of LA 148, Jackson, LA
Built 1999 Load: 35.0 t ADT: 50
LAMKIN RD
FairOver: CYPRESS BAYOU
.3 MI EAST INT. 076, Jackson, LA
Built 1999 Load: 35.0 t ADT: 85
Showing 4,651-4,700 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 |