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
LA0126
GoodOver: BEN'S CREEK
1.48 M N of LA 8, Catahoula, LA
Built 1983 Load: 39.0 t ADT: 544
LA0923
GoodOver: CREEK
2.2 MI NORTH OF LA 126, Catahoula, LA
Built 1979 Load: 39.0 t ADT: 550
LA0129
GoodOver: WILD COW BAYOU
3.8 MI NORTH OF LA 909, Concordia, LA
Built 1989 Load: 39.0 t ADT: 68
I0049
GoodOver: SWEEPCO R/R
0.46 MI S OF US 84 INTG, De Soto, LA
Built 1986 Load: 39.0 t ADT: 28,142
LA0064
GoodOver: BATON ROUGE BAYOU
EAST OF US 61, East Baton Rouge, LA
Built 1993 Load: 39.0 t ADT: 9,464
BURBANK DR
GoodOver: BAYOU FOUNTAIN
0.1M SOUTH OF HIGHLAND RD, East Baton Rouge, LA
Built 1982 Load: 39.0 t ADT: 18,800
I0110
GoodOver: CANAL
0.05 M SE of I-110&LA 408, East Baton Rouge, LA
Built 1976 Load: 39.0 t ADT: 8,250
SIEGEN LN
GoodOver: SER. RD, WARDS CREEK, RR
0.5 Mi. E. of LA 42, East Baton Rouge, LA
Built 1994 Load: 39.0 t ADT: 437
Summers Rd
GoodOver: BEAVER BAYOU
0.02 MI. E. SULLIVAN RD., East Baton Rouge, LA
Built 2001 Load: 39.0 t ADT: 20
LA3187
GoodOver: CARPS BAYOU
3.56 Mi W OF LA13, Evangeline, LA
Built 1991 Load: 39.0 t ADT: 89
LA3187
GoodOver: BOGGY BAYOU
3.77 Mi W OF LA13, Evangeline, LA
Built 1991 Load: 39.0 t ADT: 89
LA0004
GoodOver: SANDY BAYOU
1.75 M E of LA 572, Franklin, LA
Built 1993 Load: 39.0 t ADT: 1,082
LA0130
GoodOver: ASH SLOUGH
.23 MI WEST OF LA 15, Franklin, LA
Built 1980 Load: 39.0 t ADT: 7,372
LA0128
GoodOver: Deer Creek
1.2 MI EAST OF LA 15, Franklin, LA
Built 1981 Load: 39.0 t ADT: 906
LA0577
GoodOver: DEER CREEK
1.60 M E of LA 15, Franklin, LA
Built 1985 Load: 39.0 t ADT: 977
LA1240
GoodOver: LAPET CREEK
3.57 MI. N OF US 71, Grant, LA
Built 2003 Load: 39.0 t ADT: 229
LA1240
GoodOver: FOUCHMIAH CREEK
5.66 MI. N OF US 71, Grant, LA
Built 2003 Load: 39.0 t ADT: 229
I0010
GoodOver: OFF RP FROM I 10 EAST
3.7 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 39.0 t ADT: 15,955
LA3086
GoodOver: SERPENT BAYOU
3.2 MI N of LA 102, Jefferson Davis, LA
Built 1990 Load: 39.0 t ADT: 369
US0090
GoodOver: ON RAMP H
.4 MI EAST OF LA 182, Lafourche, LA
Built 1980 Load: 39.0 t ADT: 12,192
US0084
GoodOver: MILL POND CREEK
.4 MI EAST OF LA 772, LaSalle, LA
Built 1993 Load: 39.0 t ADT: 3,620
LA0772
GoodOver: CREEK
.7 MI EAST OF US 84, LaSalle, LA
Built 1978 Load: 39.0 t ADT: 116
LA0124
GoodOver: CRREK
2.0 MI EAST OF US 165, LaSalle, LA
Built 1980 Load: 39.0 t ADT: 1,838
LA0500
GoodOver: CREEK
1.7 MI WEST OF US 84, LaSalle, LA
Built 1989 Load: 39.0 t ADT: 1,008
LA0127
GoodOver: DEVIL'S CREEK
0.6 MI SOUTH OF LA 777, LaSalle, LA
Built 1997 Load: 39.0 t ADT: 1,675
LA0460
GoodOver: HICKORY BRANCH
2.8 MI EAST OF LA 127, LaSalle, LA
Built 1978 Load: 39.0 t ADT: 776
LA0460
GoodOver: CREEK
3.2 MI EAST OF LA 127, LaSalle, LA
Built 1980 Load: 39.0 t ADT: 776
LA0459
GoodOver: SALEM CREEK
8.3 MI NORTH OS US 84, LaSalle, LA
Built 1979 Load: 39.0 t ADT: 1,160
LA0773
GoodOver: CREEK
2.4 MI NORTH OF LA 774, LaSalle, LA
Built 1981 Load: 39.0 t ADT: 1,537
LA3071
GoodOver: CREEK
1.15 MI EAST OF LA 503, LaSalle, LA
Built 1979 Load: 39.0 t ADT: 429
LA1036
GoodOver: EAST HOG BRANCH
2.8 M NW OF LA 442, Livingston, LA
Built 1980 Load: 39.0 t ADT: 601
LA0155
GoodOver: BLACK LAKE BAYOU
3.9 MI. W OF INT LA153, Natchitoches, LA
Built 1992 Load: 39.0 t ADT: 640
LA0155
GoodOver: MCGEE BRANCH
1.9 MI. W OF INT LA153, Natchitoches, LA
Built 1992 Load: 39.0 t ADT: 513
LA0155
GoodOver: BUCKET CREEK
0.2 MI. W OF INT LA153, Natchitoches, LA
Built 1992 Load: 39.0 t ADT: 513
I0010
GoodOver: OLD GENTILLY RD
3.6 MI EAST OF LA 39, Orleans, LA
Built 1966 Load: 39.0 t ADT: 12,658
I0010
GoodOver: READ RD.
3.3 MI EAST OF US 90, Orleans, LA
Built 1973 Load: 39.0 t ADT: 1,600
US0190
GoodOver: BAYOU CHOLPE
2.95 MI W. OF WBR PH LINE, Pointe Coupee, LA
Built 1996 Load: 39.0 t ADT: 20,176
US0190
GoodOver: BAYOU CHOLPE
2.95MI.W.OF W.B.R. PAR.LN, Pointe Coupee, LA
Built 1996 Load: 39.0 t ADT: 14,467
LA0008
GoodOver: DEVIL CREEK
6.15 M. SOUTH OF LA 119, Rapides, LA
Built 2004 Load: 39.0 t ADT: 1,127
LA0008
GoodOver: CREEK
4.16 M SOUTH OF LA 119, Rapides, LA
Built 2004 Load: 39.0 t ADT: 1,127
LA0008
GoodOver: BAYOU PINE
1.75 M SOUTH OF LA 119, Rapides, LA
Built 2004 Load: 39.0 t ADT: 1,127
LA0008
GoodOver: CREEK
.87 M SOUTH OF LA 119, Rapides, LA
Built 2004 Load: 39.0 t ADT: 1,456
I0049
GoodOver: GROUND
NORTH I-49 / US 71 INTG., Rapides, LA
Built 1995 Load: 39.0 t ADT: 15,642
I0049
GoodOver: COTTON BAYOU
0.71 MI. NORTH OF LA 498, Rapides, LA
Built 1991 Load: 39.0 t ADT: 20,561
LA0783
GoodOver: DRY CREEK
7.59 MI NORTH OF LA 783, Red River, LA
Built 1978 Load: 39.0 t ADT: 345
PONY GREER RD
GoodOver: BEE BAYOU
0.5 MI E of LA 3048, Richland, LA
Built 2005 Load: 39.0 t ADT: 350
LA0039
GoodOver: LAKE BORGNE CANAL
2.2 MI NORTH OF LA 1249, St. Bernard, LA
Built 1981 Load: 39.0 t ADT: 47,739
LA3142
GoodOver: MP RR @ TAFT
.45 MI NORTH OF LA 3127, St. Charles, LA
Built 1977 Load: 39.0 t ADT: 5,122
I0055
GoodOver: I-55 NORTH OFF RAMP RUDC
0.1 M W OF US 51, St. John the Baptist, LA
Built 1975 Load: 39.0 t ADT: 187
I0055
GoodOver: I-55 NORTH ON RAMP RUDDC
0.1 M W OF US 51, St. John the Baptist, LA
Built 1975 Load: 39.0 t ADT: 8,115
Showing 9,651-9,700 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 |