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
S BEARHEAD RD
FairOver: BEARHEAD CREEK
1.3 MI E. OF LA 109, Beauregard, LA
Built 1983 Load: 36.0 t ADT: 25
CLYDE FANT PKWY
FairOver: STONER AVENUE
0.9 MI. N OF LA 3032, Caddo, LA
Built 1974 Load: 36.0 t ADT: 10,602
Bank St
FairOver: DRAIN CREEK
.2 MILES W OF LA 67 & KER, East Feliciana, LA
Built 2008 Load: 36.0 t ADT: 535
US0165
FairOver: GUM BAYOU
0.8 MI. S OF LA 3086, Jefferson Davis, LA
Built 2008 Load: 36.0 t ADT: 8,453
ADAMS RD.
FairOver: LITTLE MARSH BAYOU
1.5 MI E of TOPSY BELL RD, Jefferson Davis, LA
Built 1999 Load: 36.0 t ADT: 100
N. Church St.
FairOver: Coulee
.13 MI N of E St Peter St, Lafayette, LA
Built 1995 Load: 36.0 t ADT: 13,800
US0167
FairOver: CREEK
7.35 MI N of US 80, Lincoln, LA
Built 2008 Load: 36.0 t ADT: 422
US0167
FairOver: CREEK
7.35 MI N of US 80, Lincoln, LA
Built 2008 Load: 36.0 t ADT: 2,487
BONNER ST
FairOver: KCS RAILROAD
BONNER ST/ RUSTON, Lincoln, LA
Built 2004 Load: 36.0 t ADT: 6,200
Morrison Rd
FairOver: DRAINAGE CANAL
.8 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 36.0 t
BREARD ST
FairOver: DRAINAGE DITCH
BREARD ST. MONROE LA, Ouachita, LA
Built 1970 Load: 36.0 t ADT: 2,000
Briar Patch Cemt
FairOver: COOPER CREEK
2.2 MI NE OF JCT 40 &1062, Tangipahoa, LA
Built 2006 Load: 36.0 t ADT: 639
US0167
FairOver: MIDDLE FORK BAYOU
2.0 MI. NORTH OF LA 545, Union, LA
Built 2012 Load: 36.0 t ADT: 422
US0167
FairOver: MIDDLE FORK RELIEF
2.38 MI. NORTH OF LA 545, Union, LA
Built 2012 Load: 36.0 t ADT: 422
US0167
FairOver: CORNEY BAYOU RELIEF
2.08 MI. SOUTH OF LA 15, Union, LA
Built 2012 Load: 36.0 t ADT: 422
US0167
FairOver: JENK'S BRANCH
1.34 MI. NORTH OF LA 15, Union, LA
Built 2012 Load: 36.0 t ADT: 422
I0010-E
FairOver: Plant Rd
7.5 MI EAST OF LA 97, Acadia, LA
Built 1961 Load: 36.3 t ADT: 48,502
US 190
FairOver: SLOUGH
8.6 MI. E OF LA 113, Allen, LA
Built 1976 Load: 36.3 t ADT: 2,958
CARPENTERS BRDG RD
FairOver: PERRY CREEK
7.0 MI N of US 190, Allen, LA
Built 2000 Load: 36.3 t ADT: 100
DESHOTEL RD
FairOver: GUM BRANCH
3.4 MI EAST OF US 165, Allen, LA
Built 1985 Load: 36.3 t ADT: 32
TEN MILE RD
FairOver: TEN MILE CREEK
2.0 MI NORTH OF LA 26, Allen, LA
Built 2008 Load: 36.3 t ADT: 150
LA0431
FairOver: LAKE VILLAR
0.92 MI S of LA 42, Ascension, LA
Built 1983 Load: 36.3 t ADT: 9,608
LA0001
FairOver: KCS RR & DR T DOO'S RD
0.14 MI. NORTH OF LA 1186, Avoyelles, LA
Built 1971 Load: 36.3 t ADT: 4,686
LA0115
FairOver: DIVERSION CANAL
1.36 MI. WEST OF LA 1176, Avoyelles, LA
Built 1950 Load: 36.3 t ADT: 1,830
NICHOLS SIBLEY RD
FairOver: TROUT CREEK
0.4 MI S of US 190, Beauregard, LA
Built 2005 Load: 36.3 t ADT: 200
LA0147
FairOver: CREEK
0.9 MI WEST OF LA 9, Bienville, LA
Built 1979 Load: 36.3 t ADT: 1,988
LA0154
FairOver: BLACK LAKE BAYOU
3.15 MI EAST OF LA 792, Bienville, LA
Built 1979 Load: 36.3 t ADT: 856
US0171
FairOver: MISSOURI PACIFIC RAILROA
0.7 MI. S. OF LA 511, Caddo, LA
Built 1986 Load: 36.3 t ADT: 16,911
I0020
FairOver: KINGS HWY & PORTLAND AVE
.3 MI EAST OF US 71, Caddo, LA
Built 1965 Load: 36.3 t ADT: 98,318
I0049
FairOver: KCS/T&P RR
1.81M NORTH OF LA 526 INT, Caddo, LA
Built 1991 Load: 36.3 t ADT: 87,567
CLYDE FANT PKWY
FairOver: STONER AVE
0.9 MI. NO.OF LA 303, Caddo, LA
Built 1974 Load: 36.3 t ADT: 7,678
I0210
FairOver: UPRR
.2 MI EAST OF US 90, Calcasieu, LA
Built 1977 Load: 36.3 t ADT: 3,857
LA0808
FairOver: CREEK
2.1 MI NORTH OF LA 615, Claiborne, LA
Built 1977 Load: 36.3 t ADT: 123
LA0518
FairOver: BLACK LAKE BAYOU
2.9 MI EAST OF US 79, Claiborne, LA
Built 1981 Load: 36.3 t ADT: 467
LA0518
FairOver: DRAIN
2.97 MI EAST OF US 79, Claiborne, LA
Built 1981 Load: 36.3 t ADT: 467
LA0540
FairOver: BEAVER BRANCH
.92 MI WEST OF US 79, Claiborne, LA
Built 1978 Load: 36.3 t ADT: 888
US0171
FairOver: WALLACE CREEK
1.6 MI. S. OF LA 3015, De Soto, LA
Built 2003 Load: 36.3 t ADT: 6,604
LA0764
FairOver: MIM SPRINGS
1.14 MI NORTH OF US 84, De Soto, LA
Built 1974 Load: 36.3 t ADT: 1,933
LA0946
FairOver: HURRICANE CREEK
2.04M NORTH OF LA 37, East Baton Rouge, LA
Built 1992 Load: 36.3 t ADT: 11,578
LA0946
FairOver: ROBERTS CANAL
5.46M NORTH OF LA 37, East Baton Rouge, LA
Built 1992 Load: 36.3 t ADT: 11,578
LA0946
FairOver: JONES BAYOU
9.95M NORTH OF LA 37, East Baton Rouge, LA
Built 1992 Load: 36.3 t ADT: 11,578
CC CAMP RD
FairOver: DRAIN TO CASTER CREEK
.4 MI. S.E. INT. RT. 193, Jackson, LA
Built 1986 Load: 36.3 t ADT: 48
31st St
FairOver: DUNCAN CANAL
1.2 MI. E. OF LOYOLA, Jefferson, LA
Built 2004 Load: 36.3 t
CHAISSON ROAD
FairOver: EAST BAYOU LACASSINE
1.51 MI N OF I-10 SER RD, Jefferson Davis, LA
Built 2019 Load: 36.3 t ADT: 16
US0080
FairOver: CREEK
3.1 MI EAST OF LA 145, Lincoln, LA
Built 1948 Load: 36.3 t ADT: 3,275
LA0145
FairOver: LITTLE CHOUDRANT CREEK
.1 MI NORTH OF LA 556, Lincoln, LA
Built 1975 Load: 36.3 t ADT: 2,458
LA0145
FairOver: CHOUDRANT CREEK RELIEF
.2 MI NORTH OF LA 556, Lincoln, LA
Built 1975 Load: 36.3 t ADT: 2,458
US0190
FairOver: TICKFAW RIVER
US0190, Livingston, LA
Built 1949 Load: 36.3 t ADT: 7,126
LA0835
FairOver: CREEK
10.47 MI E of US 165, Morehouse, LA
Built 1973 Load: 36.3 t ADT: 366
LA0001
FairOver: SIBLEY LAKE
.70 MI N OF JCT LA 6, Natchitoches, LA
Built 1969 Load: 36.3 t ADT: 14,586
Showing 4,801-4,850 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 |