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
I0055
GoodOver: BLACK BRANCH
0.5 M N OF LA 440, Tangipahoa, LA
Built 1966 Load: 32.4 t ADT: 21,762
I0055
GoodOver: BUTTON CREEK
1.0 M S OF LA 38, Tangipahoa, LA
Built 1966 Load: 32.4 t ADT: 21,762
I0055
GoodOver: CREEK
0.4 M N OF LA 38, Tangipahoa, LA
Built 1966 Load: 32.4 t ADT: 21,762
I0012
GoodOver: SIMS CREEK
I0012, Tangipahoa, LA
Built 1975 Load: 32.4 t ADT: 53,386
LA1057
GoodOver: DRAIN
LA 1057, Tangipahoa, LA
Built 1967 Load: 32.4 t ADT: 1,539
LA1040
GoodOver: DRAIN
1.9 MI E. LIV. PH LINE, Tangipahoa, LA
Built 1994 Load: 32.4 t ADT: 7,190
LA1054
GoodOver: DRAIN
1.0 MI W of LA 1061, Tangipahoa, LA
Built 1999 Load: 32.4 t ADT: 1,318
LA1058
GoodOver: ARKANSAS BRANCH
0.8 MI. SO. JCT LA. 440, Tangipahoa, LA
Built 1971 Load: 32.4 t ADT: 276
LA1065
GoodOver: DRAIN
1.21 MI N JCT US 190, Tangipahoa, LA
Built 2004 Load: 32.4 t ADT: 5,843
LA3158
GoodOver: SELSERS CREEK
LA. 3158, Tangipahoa, LA
Built 1978 Load: 32.4 t ADT: 11,309
N. Cooper Rd
GoodOver: MIXON BRANCH
3M SE J1054 &16-COOPER RD, Tangipahoa, LA
Built 1999 Load: 32.4 t ADT: 1,082
US0065
GoodOver: TENSAS BAYOU
.9 MI SOUTH OF LA 566, Tensas, LA
Built 1957 Load: 32.4 t ADT: 2,033
US0065
GoodOver: CREEK
.1 MI SOUTH OF LA 568, Tensas, LA
Built 1957 Load: 32.4 t ADT: 2,033
LA0128
GoodOver: INDIAN SLOUGH CANAL
1.2 miles NW of LA 605, Tensas, LA
Built 1932 Load: 32.4 t ADT: 2,306
Sanderson RD
GoodOver: Little Choctaw Bayou
LOGMI 1.25 S of Hwy 573, Tensas, LA
Built 2000 Load: 32.4 t ADT: 100
Sanderson RD
GoodOver: Lil CHOCTAW BAYOU
1.2M S of LA 573, Tensas, LA
Built 2000 Load: 32.4 t ADT: 100
LIBERTY ST BRIDGE
GoodOver: BAYOU TERREBONNE
0.2 MI E OF LA 182, Terrebonne, LA
Built 1994 Load: 32.4 t ADT: 14,700
LA0311
GoodOver: LITTLE BAYOU BLACK
1.15 MI SOUTH OF LA 312, Terrebonne, LA
Built 1951 Load: 32.4 t ADT: 11,582
ARAGON RD
GoodOver: DRAIN CANAL
.35 MI NORTH OF LA 58, Terrebonne, LA
Built 1972 Load: 32.4 t ADT: 1,556
LA0015
GoodOver: CR
4.6 MI N OUACHITA PAR LN, Union, LA
Built 2008 Load: 32.4 t ADT: 6,512
LA0015
GoodOver: CREEK
4.7 MI NORTH OF LA 552, Union, LA
Built 1997 Load: 32.4 t ADT: 6,512
HUDSON RD
GoodOver: CANE CREEK
1.1 MI E of LA 828, Union, LA
Built 2003 Load: 32.4 t ADT: 334
ALABAMA LANDING RD
GoodOver: EDWARDS CREEK
1.9 MI SW of LA 827, Union, LA
Built 1990 Load: 32.4 t ADT: 335
PILGRIM REST CH RD
GoodOver: DRAIN TO LITTLE CORNEY
4.6 MI NW of LA 15, Union, LA
Built 1998 Load: 32.4 t ADT: 366
Bluebonnet Rd
GoodOver: COULEE
0.2 MI W OF LA 13, Vermilion, LA
Built 2011 Load: 32.4 t ADT: 105
Dennis Rd
GoodOver: COULEE DES ILES
1.3 Mi W. of La 35, Vermilion, LA
Built 2011 Load: 32.4 t ADT: 46
E. Conrad Rd
GoodOver: COULEE
0.1 MI. W. OF LA 339, Vermilion, LA
Built 2012 Load: 32.4 t ADT: 400
LA0014
GoodOver: DRAINAGE
1.30 MI N. OF LA 14-B, Vermilion, LA
Built 1999 Load: 32.4 t ADT: 12,903
LA0014
GoodOver: DRAINAGE
0.4 Mi SE of LA 339, Vermilion, LA
Built 1999 Load: 32.4 t ADT: 12,903
US0167
GoodOver: Kenny Coulee
0.5 MI N. OF LA 697, Vermilion, LA
Built 1954 Load: 32.4 t ADT: 18,668
US0167
GoodOver: DRAINAGE CANAL
1.2 MI N. OF LA 696, Vermilion, LA
Built 1988 Load: 32.4 t ADT: 8,375
US0167
GoodOver: CANAL
1.22 MI N. OF LA 697, Vermilion, LA
Built 1954 Load: 32.4 t ADT: 18,668
LA0092
GoodOver: CREEK
1.0 MI E. OF LA 343, Vermilion, LA
Built 1961 Load: 32.4 t ADT: 5,170
LA0343
GoodOver: CREEK
0.7 MI N. OF LA 697, Vermilion, LA
Built 1957 Load: 32.4 t ADT: 2,830
LA0035
GoodOver: CREEK
1.49 MI N. OF LA 700, Vermilion, LA
Built 1962 Load: 32.4 t ADT: 1,034
LA3093
GoodOver: DRAINAGE CANAL
2.33 MI S. OF LA 14, Vermilion, LA
Built 1965 Load: 32.4 t ADT: 473
LA3093
GoodOver: CANAL
2.87 MI S. OF LA 14, Vermilion, LA
Built 1965 Load: 32.4 t ADT: 473
LA0694
GoodOver: NOEL DITCH
0.96 MI N. OF LA 693, Vermilion, LA
Built 1964 Load: 32.4 t ADT: 507
Pine Island Rd
GoodOver: COULEE
1.6 Mi W of La 82, Vermilion, LA
Built 2011 Load: 32.4 t ADT: 286
Lake Rd
GoodOver: SEVENTH WARD CANAL
2.2 miles E. of Goldie Rd, Vermilion, LA
Built 1987 Load: 32.4 t ADT: 100
Rosewood Rd
GoodOver: CASTILLE COULEE
1.8 Mi N of La 14, Vermilion, LA
Built 1986 Load: 32.4 t ADT: 250
LA0008
GoodOver: BEE BRANCH
1.07 MI. E OF E INT. LA 4, Vernon, LA
Built 2012 Load: 32.4 t ADT: 5,978
LA0008
GoodOver: BIG BRANCH CREEK
2.61 MILES EAST OF LA 121, Vernon, LA
Built 2015 Load: 32.4 t ADT: 931
LA0008
GoodOver: FLAT BRANCH CREEK
3.3 MILES NORTH OF LA 121, Vernon, LA
Built 2015 Load: 32.4 t ADT: 931
LA0028
GoodOver: YELLOW BRANCH
0.56 MI E OF LA 465, Vernon, LA
Built 2008 Load: 32.4 t ADT: 7,065
LA0008
GoodOver: CREEK
2.3 MILES S.W. OF WEST JC, Vernon, LA
Built 2016 Load: 32.4 t ADT: 931
LA0008
GoodOver: CREEK
1.2 MI E OF LA 465, Vernon, LA
Built 2016 Load: 32.4 t ADT: 931
US0171
GoodOver: CREEK
.55 MI SOUTH OF LA 3226, Vernon, LA
Built 1930 Load: 32.4 t ADT: 14,420
LA0008
GoodOver: CREEK
8.2 MI EAST OF LA 464, Vernon, LA
Built 1944 Load: 32.4 t ADT: 7,336
LA0010
GoodOver: POLLARD BRANCH
1.22 MI. WEST OF LA 377, Vernon, LA
Built 2005 Load: 32.4 t ADT: 1,120
Showing 8,501-8,550 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 |