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
LA1248
FairOver: WARD CREEK
3.17 MI N OF BURBANK DR., East Baton Rouge, LA
Built 1978 Load: 37.2 t ADT: 24,300
I0010
FairOver: PERKINS RD OFF RAMP
I0010, East Baton Rouge, LA
Built 1964 Load: 37.2 t ADT: 14,496
May St
FairOver: CITY PARK LAKES
0.2 Mi. E of Dalrymple dr, East Baton Rouge, LA
Built 1950 Load: 37.2 t ADT: 3,500
OLD HWY 882
FairOver: JOE'S BAYOU
3.92 MI WEST OF SOUTH INT, East Carroll, LA
Built 1975 Load: 37.2 t ADT: 110
US0061
FairOver: FOSTER CREEK
US 61, East Feliciana, LA
Built 1982 Load: 37.2 t ADT: 2,531
LA0955
FairOver: OLIVE BRANCH
0.2 M E of LA 955&LA 957, East Feliciana, LA
Built 1970 Load: 37.2 t ADT: 989
LA1166
FairOver: BAYOU MARRON
1.45 MI NORTH OF LA 1165, Evangeline, LA
Built 1974 Load: 37.2 t ADT: 193
LA0577
FairOver: CREEK
3.7 MI EAST OF LA 867, Franklin, LA
Built 1970 Load: 37.2 t ADT: 977
LA0679
FairOver: BAYOU DE PORTAGE
2.53 MI NORTH OF LA 345, Iberia, LA
Built 1972 Load: 37.2 t ADT: 1,590
I0010
FairOver: I-10 RAMP
0.1 M E of LA 975, Iberville, LA
Built 1972 Load: 37.2 t ADT: 557
LA0034
FairOver: CREEK
1.01 MI NORTH OF LA 4, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,974
LA0034
FairOver: DRY BRANCH
5.92 MI E of LA 4, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,877
LA0034
FairOver: DRY BRANCH
0.6 MI NORTH of LA 148, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,877
LA0034
FairOver: FLAT BRANCH
0.7 MI NORTH of LA 148, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,877
I0010
FairOver: WEST LACASSINE BAYOU
1.1 MI E of LA 101, Jefferson Davis, LA
Built 1964 Load: 37.2 t ADT: 838
I0010
FairOver: W. LACASSINE BAYOU
5.5 MI W OF LA 99, Jefferson Davis, LA
Built 1964 Load: 37.2 t ADT: 11,635
I0010
FairOver: E. LACASSINE BAYOU
5.9 MI E of LA 101, Jefferson Davis, LA
Built 1964 Load: 37.2 t ADT: 838
I0010
FairOver: E. LACASSINE BAYOU
0.6 MI W OF LA 99, Jefferson Davis, LA
Built 1964 Load: 37.2 t ADT: 11,635
LA0024
FairOver: ST. LOUIS BAYOU
10.6 MI WEST OF LA 1, Lafourche, LA
Built 1975 Load: 37.2 t ADT: 5,271
US0080
FairOver: CHOUDRANT CREEK
3.3 MI EAST OF LA 145, Lincoln, LA
Built 1948 Load: 37.2 t ADT: 3,275
LA0145
FairOver: CHOUDRANT CREEK RELIEF
.3 MI NORTH OF LA 556, Lincoln, LA
Built 1975 Load: 37.2 t ADT: 2,458
LA0544
FairOver: WALNUT CREEK
4.53 MI E of LA 151, Lincoln, LA
Built 1980 Load: 37.2 t ADT: 927
LA0544
FairOver: CREEK
4.64 MI EAST OF LA 151, Lincoln, LA
Built 1980 Load: 37.2 t ADT: 927
LA0151
FairOver: LITTLE D'ARBONNE CREEK
2.3 MI W UNION PARISH LN, Lincoln, LA
Built 1978 Load: 37.2 t ADT: 189
LA0043
FairOver: DRAIN
0.6 M S OF LA 1064, Livingston, LA
Built 1980 Load: 37.2 t ADT: 5,232
LA0043
FairOver: SMARY BRANCH
0.1 M N OF LA 1064, Livingston, LA
Built 1980 Load: 37.2 t ADT: 3,362
LA0016
FairOver: DRAIN
1.3 M NW OF LA 1032, Livingston, LA
Built 1980 Load: 37.2 t ADT: 6,275
LA0016
FairOver: GRAYS CREEK
1.0 M SE OF LA 1026, Livingston, LA
Built 1979 Load: 37.2 t ADT: 6,226
LA1019
FairOver: BEAVER CREEK
1.3 M E OF LA 16, Livingston, LA
Built 1984 Load: 37.2 t ADT: 7,015
I0020
FairOver: OLD US 65; WALNUT BAYOU
.2 MI WEST OF US 65, Madison, LA
Built 1975 Load: 37.2 t ADT: 31,481
I0020
FairOver: OLD US 65; WALNUT BAYOU
.2 .1 MI EAST OF US 65, Madison, LA
Built 1975 Load: 37.2 t ADT: 31,481
LA0592
FairOver: BAYOU BARTHOLOMEW
3.75 MI WEST OF LA 830-1, Morehouse, LA
Built 1976 Load: 37.2 t ADT: 246
LA0009
FairOver: DRY CHOCTAW CREEK
0.91 MI. NORTH OF LA 479, Natchitoches, LA
Built 1977 Load: 37.2 t ADT: 282
LA0118
FairOver: CREEK
3.19 MI. WEST OF LA 117, Natchitoches, LA
Built 1982 Load: 37.2 t ADT: 1,471
US0165-B
FairOver: DESIARD ST & ICG RR
.3 MI NORTH OF I-20, Ouachita, LA
Built 1971 Load: 37.2 t ADT: 4,400
US0165
FairOver: BAYOU MOUCHOIR
.88 MI NORTH OF US 165 BU, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 29,759
US0165
FairOver: BAYOU MOUCHOIR
.88 MI NORTH OF US 165 BU, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 17,565
US0165
FairOver: BAYOU MOUCHOIR
1.06 MI NORTH OF US 165 B, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 29,759
US0165
FairOver: BAYOU MOUCHOIR
1.06 MI NORTH OF US 165 B, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 17,565
US0165
FairOver: PINE BAYOU
3.65 MI NORTH OF US 165 B, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 29,759
US0165
FairOver: PINE BAYOU
3.65 MI NORTH OF US 165 B, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 17,565
US0167
FairOver: UP & LAS RR
0.21 M. S. OF US 71 INTG., Rapides, LA
Built 1970 Load: 37.2 t ADT: 29,768
US0167
FairOver: UP & LAS RR
0.21 M. S. OF US 71 INTG., Rapides, LA
Built 1970 Load: 37.2 t ADT: 27,628
LA1207
FairOver: SLASH BRANCH
1.2 MI. WEST OF LA 115, Rapides, LA
Built 1980 Load: 37.2 t ADT: 5,494
LA0028
FairOver: DIVERSION CANAL
2.18 MI. EAST OF LA 3054, Rapides, LA
Built 1981 Load: 37.2 t ADT: 2,110
US0071
FairOver: DRAIN
.18 MI NORTH OF US 84, Red River, LA
Built 1975 Load: 37.2 t ADT: 9,542
LA0137
FairOver: BOEUF RIVER
2.2 MI NORTH OF US 80, Richland, LA
Built 1971 Load: 37.2 t ADT: 1,954
LA0132
FairOver: KELLY BAYOU
1.9 MI EAST OF LA 135, Richland, LA
Built 1972 Load: 37.2 t ADT: 1,913
LA0132
FairOver: CANEY BAYOU
3.0 MI EAST OF LA 135, Richland, LA
Built 1972 Load: 37.2 t ADT: 1,913
LA0583
FairOver: CREEK
4.2 MI NORTH OF LA 852, Richland, LA
Built 1979 Load: 37.2 t ADT: 1,108
Showing 5,001-5,050 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 |