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: DRAIN
1.42 Mi E of LA 3184, Lafayette, LA
Built 1968 Load: 32.4 t ADT: 56,748
I0049
FairOver: CREEK
1.45 MI NORTH OF I-10, Lafayette, LA
Built 1963 Load: 32.4 t ADT: 74,085
LA3025
FairOver: COULEE MINE
0.7 MI W OF W PINHOOK RD, Lafayette, LA
Built 1967 Load: 32.4 t ADT: 34,877
W. Congress St.
FairOver: Ile Des Cannes Coulee
0.2 Mi W of La 93, Lafayette, LA
Built 1992 Load: 32.4 t ADT: 3,200
Eraste Landry Rd.
FairOver: MINE BRANCH COULEE
0.06 Mi SE of US 90, Lafayette, LA
Built 1965 Load: 32.4 t ADT: 5,620
LA0652
FairOver: 40 ARPENT CANAL
0.3 MILES EAST OF LA 182, Lafourche, LA
Built 2009 Load: 32.4 t ADT: 1,867
LA0127
FairOver: CREEK
2.5 MI NORTH OF LA 770, LaSalle, LA
Built 1950 Load: 32.4 t ADT: 3,888
US0080
FairOver: CLEAR CREEK
5.5 MI EAST OF LA 145, Lincoln, LA
Built 1930 Load: 32.4 t ADT: 3,275
US0167
FairOver: CREEK
13.67 MI N of US 80, Lincoln, LA
Built 2008 Load: 32.4 t ADT: 422
LA0033
FairOver: CREEK
.5 MI SOUTH OF LA 820, Lincoln, LA
Built 1937 Load: 32.4 t ADT: 5,474
LA0033
FairOver: BOGGY BRANCH
.4 MI NORTH OF LA 820, Lincoln, LA
Built 1938 Load: 32.4 t ADT: 5,474
LA0033
FairOver: CREEK
2.4 MI NORTH OF LA 822, Lincoln, LA
Built 1938 Load: 32.4 t ADT: 5,474
LA0151
FairOver: CREEK
2.59 MI EAST OF LA 545, Lincoln, LA
Built 1930 Load: 32.4 t ADT: 2,216
LA0145
FairOver: CREEK
.19 MI NORTH OF I-20, Lincoln, LA
Built 1960 Load: 32.4 t ADT: 5,661
I0020
FairOver: CYPRESS CREEK
1.0 MI EAST OF LA 147, Lincoln, LA
Built 1963 Load: 32.4 t ADT: 50,895
I0020
FairOver: CREEK
2.75 MI EAST OF LA 33, Lincoln, LA
Built 1960 Load: 32.4 t ADT: 50,895
I0020
FairOver: CLEAR CREEK
5.4 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 32.4 t ADT: 50,895
LA3061
FairOver: CREEK
1.19 MI EAST OF LA 818, Lincoln, LA
Built 1961 Load: 32.4 t ADT: 3,433
LA3061
FairOver: CREEK
1.56 MI EAST OF LA 818, Lincoln, LA
Built 1961 Load: 32.4 t ADT: 3,433
US0190
FairOver: CREEK
0.2 M W OF LA 1024, Livingston, LA
Built 1953 Load: 32.4 t ADT: 8,880
US0190
FairOver: CREEK
1.0 M E OF LA 1024, Livingston, LA
Built 1953 Load: 32.4 t ADT: 7,215
I0012
FairOver: GRAYS CREEK
I0012, Livingston, LA
Built 1970 Load: 32.4 t ADT: 77,469
I0012
FairOver: GRAYS CREEK
I0012, Livingston, LA
Built 1970 Load: 32.4 t ADT: 37,161
I0012
FairOver: DRAIN
1.65 MI E. OF LA 447 INT, Livingston, LA
Built 1970 Load: 32.4 t ADT: 77,469
Gaylord Rd
FairOver: DUMPLIN CREEK BRIDGE
0.4 MILES EAST OF LA 447, Livingston, LA
Built 1996 Load: 32.4 t ADT: 550
MERLE GUSTAFSON RD
FairOver: PANOLA BAYOU
1.1 MI N of US 80, Madison, LA
Built 2010 Load: 32.4 t ADT: 150
US0080
FairOver: BAYOU
7.9 MI EAST OF LA 577, Madison, LA
Built 1930 Load: 32.4 t ADT: 1,181
US0080
FairOver: GRASS LAKE
1.49 MI EAST OF WEST INT, Madison, LA
Built 1954 Load: 32.4 t ADT: 2,021
US0080
FairOver: CYPRESS BAYOU
.9 MI EAST OF EAST INT OF, Madison, LA
Built 1954 Load: 32.4 t ADT: 2,021
US0065
FairOver: DRAIN
6.5 MI NORTH OF SOUTH INT, Madison, LA
Built 1963 Load: 32.4 t ADT: 2,192
US0065
FairOver: PANOLA BAYOU
1.0 MI NORTH OF US 80, Madison, LA
Built 1932 Load: 32.4 t ADT: 8,719
US0065
FairOver: DRAIN
4.67 MI NORTH OF US 80, Madison, LA
Built 1932 Load: 32.4 t ADT: 6,051
US0065
FairOver: TALLA BENA BAYOU
6.77 MI NORTH OF US 80, Madison, LA
Built 1932 Load: 32.4 t ADT: 6,051
I0020
FairOver: CREEK
.3 MI EAST OF LA 577, Madison, LA
Built 1971 Load: 32.4 t ADT: 31,481
I0020
FairOver: CREEK
.3 MI EAST OF LA 577, Madison, LA
Built 1971 Load: 32.4 t ADT: 8,115
I0020
FairOver: MACK-BAYOU
2.6 MI EAST OF LA 577, Madison, LA
Built 1975 Load: 32.4 t ADT: 31,481
I0020
FairOver: DRAINAGE-CANAL
5.5 MI EAST OF LA 577, Madison, LA
Built 1975 Load: 32.4 t ADT: 31,481
I0020
FairOver: DRAIN
.01 MI WEST OF US 65, Madison, LA
Built 1975 Load: 32.4 t ADT: 31,481
I0020
FairOver: DRAINAGE CANAL
1.0 MI EAST OF US 65, Madison, LA
Built 1975 Load: 32.4 t ADT: 31,481
SHARKEY RD #1
FairOver: JONES BAYOU
9 MI SW TALLULAH, Madison, LA
Built 1984 Load: 32.4 t ADT: 113
BAILEY RD
FairOver: BONE CREEK
0.8 MI N of US 80, Madison, LA
Built 1997 Load: 32.4 t ADT: 225
US0165
FairOver: CREEK
4.3 MI NORTH OF SOUTH INT, Morehouse, LA
Built 1939 Load: 32.4 t ADT: 1,405
LA0134
FairOver: CREEK
1.34 MI EAST OF LA 139, Morehouse, LA
Built 1951 Load: 32.4 t ADT: 1,183
HORSESHOE LAKE RD
FairOver: BAYOU BONNE IDEE
.7 MI. ESE INT. 110, Morehouse, LA
Built 1983 Load: 32.4 t ADT: 310
US0071
FairOver: CREEK
8.24 MI. N OF INT LA6/US8, Natchitoches, LA
Built 1955 Load: 32.4 t ADT: 6,456
US0071
FairOver: COULEE
1.24 MI. NORTH OF LA 3163, Natchitoches, LA
Built 1955 Load: 32.4 t ADT: 6,456
US0084
FairOver: BOURBEAUX BAYOU
1.35 MI. EAST OF US 71, Natchitoches, LA
Built 1987 Load: 32.4 t ADT: 4,081
LA0001
FairOver: BAYOU JACK
0.68 MI. NORTH OF LA 6, Natchitoches, LA
Built 1969 Load: 32.4 t ADT: 14,586
LA0001
FairOver: BAYOU JACK-O
2.79 MI. NORTH OF LA 6, Natchitoches, LA
Built 1975 Load: 32.4 t ADT: 8,966
LA0001
FairOver: DITCH
1.2 MI. N OF N INT LA119, Natchitoches, LA
Built 1936 Load: 32.4 t ADT: 2,835
Showing 4,051-4,100 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 |