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
LA0091
GoodOver: CREEK
1.4MI SOUTH OF LA 1115, Acadia, LA
Built 1950 Load: 32.4 t ADT: 1,947
LA0091
GoodOver: CREEK
.1MI SOUTH OF LA 1115, Acadia, LA
Built 1950 Load: 32.4 t ADT: 1,947
LA0091
GoodOver: FEERE CANAL
.3 MI NORTH OF LA 1115, Acadia, LA
Built 1950 Load: 32.4 t ADT: 1,947
LA0365
GoodOver: COLES GULLY
1.0 MI WEST OF LA 1109, Acadia, LA
Built 1963 Load: 32.4 t ADT: 1,570
LA0092
GoodOver: CANAL
.8 MI EAST OF LA 1124, Acadia, LA
Built 1975 Load: 32.4 t ADT: 1,274
LA0367
GoodOver: CREEK
0.6 MI NOIRTH OF LA 1110, Acadia, LA
Built 1961 Load: 32.4 t ADT: 2,465
LA0367
GoodOver: CREEK
0.9 MI NOIRTH OF LA 1110, Acadia, LA
Built 1961 Load: 32.4 t ADT: 2,465
LA0367
GoodOver: CREEK
1.4 MI NOIRTH OF LA 1110, Acadia, LA
Built 1961 Load: 32.4 t ADT: 2,465
LA0367
GoodOver: CREEK
1.7 MI NOIRTH OF LA 1110, Acadia, LA
Built 1961 Load: 32.4 t ADT: 2,465
LA1105
GoodOver: DRAINAGE CANAL
0.5 MI EAST OF LA 367, Acadia, LA
Built 1975 Load: 32.4 t ADT: 185
LA1105
GoodOver: DRAINAGE CANAL
2.0 MI EAST OF LA 367, Acadia, LA
Built 1975 Load: 32.4 t ADT: 185
LA1100
GoodOver: CANAL
1.2 MI NORTH OF LA 98, Acadia, LA
Built 1976 Load: 32.4 t ADT: 198
LA0095
GoodOver: CANAL
0.4 MI NORTH OF LA 1097, Acadia, LA
Built 1995 Load: 32.4 t ADT: 5,112
LA0098
GoodOver: CREEK
0.2 MI E of LA 95, Acadia, LA
Built 1962 Load: 32.4 t ADT: 3,050
LA0095
GoodOver: CANAL
0.4 MI WEST OF LA 1108, Acadia, LA
Built 1993 Load: 32.4 t ADT: 1,014
I0010
GoodOver: DRAIN
6.0 MI EAST OF LA 97, Acadia, LA
Built 1961 Load: 32.4 t ADT: 36,670
I0010
GoodOver: DRAIN
.3 MI EAST OF I-10, Acadia, LA
Built 1966 Load: 32.4 t ADT: 66,003
LA1120
GoodOver: CANAL
1.81 MI NORTH OF LA 91, Acadia, LA
Built 1974 Load: 32.4 t ADT: 801
LA1115
GoodOver: CREEK
7.53 MI EAST OF LA 91, Acadia, LA
Built 1960 Load: 32.4 t ADT: 377
LA1097
GoodOver: Coulle Duralde
1.92 MI EAST OF LA 98, Acadia, LA
Built 1998 Load: 32.4 t ADT: 437
Connie Rd
GoodOver: ANDRE COULEE
0.5 Mi East Of La 1120, Acadia, LA
Built 1998 Load: 32.4 t ADT: 96
Riceland Rd.
GoodOver: COULEE
0.2 Mi. S. of La 98, Acadia, LA
Built 2001 Load: 32.4 t ADT: 144
Lourdes Rd
GoodOver: COULEE
0.5 Mi E. of LA 95, Acadia, LA
Built 2001 Load: 32.4 t ADT: 480
St. Matthew Dr.
GoodOver: Grand Coulee Ditch
0.55 Mi E of La 95, Acadia, LA
Built 2002 Load: 32.4 t ADT: 48
US0165
GoodOver: DRAIN
0.8 MI N OF LA 1152, Allen, LA
Built 1981 Load: 32.4 t ADT: 11,079
US0165
GoodOver: DRAINAGE DITCH
8.9 MI N OF LA 102, Allen, LA
Built 2002 Load: 32.4 t ADT: 11,886
US0165
GoodOver: DRAINAGE DITCH
0.2 MI N of LA 26, Allen, LA
Built 2002 Load: 32.4 t ADT: 11,886
ELOI ORTEGO RD
GoodOver: CREEK
0.5 MI. NW OF US 190, Allen, LA
Built 1992 Load: 32.4 t ADT: 240
MATTHEW ST
GoodOver: DRAIN
50 FT N of LA10, Allen, LA
Built 2008 Load: 32.4 t ADT: 194
SAM CLOUD RD
GoodOver: CREEK
2.8 MI N OF LA10, Allen, LA
Built 2007 Load: 32.4 t ADT: 985
River Oaks Rd
GoodOver: Darain Bayou
0.3 Mi.N. of LA 73, Ascension, LA
Built 2020 Load: 32.4 t ADT: 30
LA00042
GoodOver: MUDDY CREEK
01.31 MI E OF LA 73, Ascension, LA
Built 2018 Load: 32.4 t ADT: 24,000
US0061
GoodOver: CANAL
0.62 M NW of US 61&LA 22, Ascension, LA
Built 1956 Load: 32.4 t ADT: 14,802
US0061
GoodOver: CANAL
1.2 M NW of US 61&LA 22, Ascension, LA
Built 1956 Load: 32.4 t ADT: 14,802
US0061
GoodOver: CANAL
0.23 M NW of US 61&LA 431, Ascension, LA
Built 1956 Load: 32.4 t ADT: 16,379
LA0044
GoodOver: BOYLE BAYOU
1.00 MI N JCT I-10, Ascension, LA
Built 1980 Load: 32.4 t ADT: 13,914
LA0030
GoodOver: CREEK
1.2 M W of LA 30&LA 3251, Ascension, LA
Built 1968 Load: 32.4 t ADT: 16,790
LA0070
GoodOver: STREAM
1.9 M S of LA 70&LA 22, Ascension, LA
Built 1966 Load: 32.4 t ADT: 24,210
LA0070
GoodOver: STREAM
0.7 M S of LA 70&LA 22, Ascension, LA
Built 1966 Load: 32.4 t ADT: 24,210
I0010
GoodOver: DRAIN
0.2 M S of I-10&LA 74, Ascension, LA
Built 1975 Load: 32.4 t ADT: 60,802
I0010
GoodOver: DRAIN
0.5 M S of I-10&LA 74, Ascension, LA
Built 1975 Load: 32.4 t ADT: 60,802
I0010
GoodOver: DRAIN
1.4 M N of LA 30, Ascension, LA
Built 1975 Load: 32.4 t ADT: 60,802
I0010
GoodOver: DRAIN
1.4 M N of I-10&LA 30, Ascension, LA
Built 1975 Load: 32.4 t ADT: 25,735
I0010
GoodOver: CANAL
0.6 M S of I-10&LA 30, Ascension, LA
Built 1975 Load: 32.4 t ADT: 25,735
I0010
GoodOver: HACKETT CANAL
1.2 M SE of I-10&LA 44, Ascension, LA
Built 1979 Load: 32.4 t ADT: 25,735
I0010
GoodOver: CANAL
0.4 M E of I-10&US 61, Ascension, LA
Built 1969 Load: 32.4 t ADT: 49,274
Spellman Rd
GoodOver: DRAINAGE DITCH
1.5 MI S DUTCHTOWN, Ascension, LA
Built 1988 Load: 32.4 t ADT: 25
Merritt Evans Rd
GoodOver: DRAIN BAYOU
0.7 MI. SE OF LA 44, Ascension, LA
Built 2006 Load: 32.4 t ADT: 250
LA0070
GoodOver: DRAIN
2.7 M NE of LA 1&LA 70, Assumption, LA
Built 1977 Load: 32.4 t ADT: 11,166
LA0070
GoodOver: DRAIN
2.7 M NE of LA 1&LA 70, Assumption, LA
Built 1977 Load: 32.4 t ADT: 11,166
Showing 7,851-7,900 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 |