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
Stone Rd
GoodOver: HOFFMAN CREEK
0.5 MILES SOUTH OF LA 104, St. Helena, LA
Built 2011 Load: 28.2 t ADT: 250
US0190
GoodOver: BAYOU DARBONNE W.B.
1.19 Mi W of US 71, St. Landry, LA
Built 2004 Load: 28.2 t ADT: 20,176
US0090
GoodOver: CREEK
1.4 Mi W of La 662, St. Mary, LA
Built 1998 Load: 28.2 t ADT: 10,035
Texas Gulf Rd.
GoodOver: DRAIN CANAL
0.5 MI. N. OF LA 24, Terrebonne, LA
Built 2009 Load: 28.2 t ADT: 1,054
DEAN HAILE RD
GoodOver: EDWARDS CREEK
2.9 MI. N. INT. 586, Union, LA
Built 1984 Load: 28.2 t ADT: 208
LA0008
GoodOver: CANEY CREEK
10.09 MI WEST OF US 171, Vernon, LA
Built 2007 Load: 28.2 t ADT: 1,856
TRAM ROAD
GoodOver: ODOM CREEK
VE 814 715, Vernon, LA
Built 2005 Load: 28.2 t ADT: 40
US0061
GoodOver: GRANT BAYOU
1.3 M W of LA 10, West Feliciana, LA
Built 2011 Load: 28.2 t ADT: 16,169
US0061
GoodOver: GRANT BAYOU
1.3 M W OF LA 10, West Feliciana, LA
Built 2011 Load: 28.2 t ADT: 10,202
US0061
GoodOver: BAYOU
3.61 MILES NORTH OF THOMP, West Feliciana, LA
Built 2011 Load: 28.2 t ADT: 16,169
US0061
GoodOver: BAYOU
3.61 MILES NORTH OF THOMP, West Feliciana, LA
Built 2011 Load: 28.2 t ADT: 10,202
US0061
GoodOver: BAYOU
0.2 M W OF LA 10, West Feliciana, LA
Built 2011 Load: 28.2 t ADT: 16,169
US0061
GoodOver: E FORK GRANTS BAYOU
0.2 M E OF LA 10, West Feliciana, LA
Built 2011 Load: 28.2 t ADT: 10,202
US0167
GoodOver: CEDAR CREEK
7.48 MI. NORTH OF LA 500, Winn, LA
Built 2009 Load: 28.2 t ADT: 5,107
US0167
GoodOver: BIG CREEK RELIEF
2.46 MI. NORTH OF LA 126, Winn, LA
Built 2010 Load: 28.2 t ADT: 5,367
Cossinade Rd
GoodOver: Coulee Des Iles
0.6 Mi N. of La 13, Vermilion, LA
Built 2000 Load: 28.4 t ADT: 240
SOUTH LAKESHORE DR
GoodOver: CROSS BAYOU
2.6 MI E OF LA 169, Caddo, LA
Built 1984 Load: 28.5 t ADT: 475
North Lakeshore Dr
GoodOver: JOHNSONS ARM
2.2 MI SW OF LA 173, Caddo, LA
Built 1992 Load: 28.5 t ADT: 152
Edwards Rd.
GoodOver: INDIAN CREEK
0.51 M S OF LINCEEUM VILL, Grant, LA
Built 2011 Load: 28.5 t ADT: 25
PATRIOT ST
GoodOver: SWIFT CANAL
1 MI E. OF BARATARIA BLVD, Jefferson, LA
Built 1984 Load: 28.5 t ADT: 450
Copper Meadow Blvd
GoodOver: Parc Perdu Bayou
0.40 Mi W of Lafayette St, Lafayette, LA
Built 2008 Load: 28.5 t ADT: 158
CENTERPOINT RD
GoodOver: WEST BRANCH DUGEDEMONLA
2.1 MI E of LA 507, Lincoln, LA
Built 1999 Load: 28.5 t ADT: 35
NORRIS RD
GoodOver: CHOUDRANT CREEK
0.1 MI N of US 80, Lincoln, LA
Built 1999 Load: 28.5 t ADT: 73
LA0830-3
GoodOver: HORSE BAYOU
1.1 MI N of US 165, Morehouse, LA
Built 2010 Load: 28.5 t ADT: 2,866
SPYKER RD
GoodOver: STAULKING HEAD CREEK
.6 MI SE INT. 017, Morehouse, LA
Built 1998 Load: 28.5 t ADT: 100
COOPER LAKE RD
GoodOver: CYPRESS BAYOU
0.3 MI NW of LA 830-3, Morehouse, LA
Built 1998 Load: 28.5 t ADT: 1,350
GUYTON SWAMP RD
GoodOver: MILL CREEK
1.55 MI NW of LA 34, Ouachita, LA
Built 1992 Load: 28.5 t ADT: 74
ACEL ST
GoodOver: LITTLE CREEK
LOGMI 0.22 FR 1 TO 2, Richland, LA
Built 1982 Load: 28.5 t ADT: 250
LA0440
GoodOver: TANGIPAHOA RIVER
0.90 MILES EAST OF US 51, Tangipahoa, LA
Built 2006 Load: 28.5 t ADT: 2,470
Adams Rd
GoodOver: YELLOW WATER RIVER BR.
3MI SW/LA 51EXIT ADAMS RD, Tangipahoa, LA
Built 1996 Load: 28.5 t ADT: 3,500
LA0126
GoodOver: SALINE BAYOU
3.61 MILES EAST OF LA 9, Winn, LA
Built 1994 Load: 28.5 t ADT: 310
LA0370
GoodOver: CREEK
0.65 MI EAST OF LA 91, Acadia, LA
Built 1971 Load: 28.8 t ADT: 568
US0090
GoodOver: ONGOING RAMP B.E.
6 Mi E of LA 182/90, Assumption, LA
Built 1999 Load: 28.8 t ADT: 12,192
Butler Hill Rd
GoodOver: Caney Creek
3.9 MI NORTH OF LA 162, Bossier, LA
Built 1994 Load: 28.8 t ADT: 250
TROUSDALE ROAD
GoodOver: CONOCO PHILLIPS PIPELINE
0.70 MI N OF US 90, Calcasieu, LA
Built 1995 Load: 28.8 t ADT: 2,938
Breckenridge Ave
GoodOver: MONTE SANO BAYOU
0.9 M OF W OF LA 67, East Baton Rouge, LA
Built 1985 Load: 28.8 t ADT: 150
Carson Rd
GoodOver: TURKEY CREEK
LOGMI 4.35 FR 655 TO ODE, Franklin, LA
Built 1996 Load: 28.8 t ADT: 100
LAJAUNIE RD
GoodOver: VERMILLION RIVER
1.10 M S of I-10, Lafayette, LA
Built 2017 Load: 28.8 t ADT: 680
US0165
GoodOver: CREEK
0.91 MILES NORTH OF THE L, LaSalle, LA
Built 2009 Load: 28.8 t ADT: 4,538
LITTLE DEE RD
GoodOver: LITTLE BAYOU GALION
1.0 MI N of LA 2, Morehouse, LA
Built 1995 Load: 28.8 t ADT: 420
PROVIDENCE PL
GoodOver: PRESS DR
0.1 MILE SOUTH OF LEON C, Orleans, LA
Built 1974 Load: 28.8 t
US0071
GoodOver: RED RIVER FORT BUHLOW
1.0 MILE NORTH OF I-49, Rapides, LA
Built 2015 Load: 28.8 t ADT: 10,090
I0012
GoodOver: CANAL & BIKE TR
0.1 M W OF LA 59, St. Tammany, LA
Built 1976 Load: 28.8 t ADT: 33,650
I0055
GoodOver: BEAVER CREEK
0.3 Miles north of LA 440, Tangipahoa, LA
Built 1966 Load: 28.8 t ADT: 21,762
LA3267
GoodOver: YOUNGS NORTH COULEE
0.62 MI S of LA 14, Vermilion, LA
Built 2009 Load: 28.8 t ADT: 3,084
COOPER CHURCH RD
GoodOver: PARISH RD #4,ZOURIE BAYO
COOPER ROAD, Vernon, LA
Built 1983 Load: 28.8 t ADT: 510
US0165
GoodOver: BLACK BAYOU
0.5 MI S OF LA 506, Caldwell, LA
Built 1945 Load: 29.0 t ADT: 12,669
US0165
GoodOver: LITTLE BLACK BAY
1.9 MI SOUTH OF LA 844, Caldwell, LA
Built 1945 Load: 29.0 t ADT: 6,071
LA0124
GoodOver: BODCAW CANAL
6.4 MI SOUTH OF LA 564, Catahoula, LA
Built 1967 Load: 29.0 t ADT: 410
LA0921
GoodOver: TAGUE BAYOU
1.9 MI NORTH OF LA 567, Catahoula, LA
Built 1964 Load: 29.0 t ADT: 145
Showing 7,501-7,550 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 |