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
Orphe Guidry Rd.
FairOver: GRAND CANAL
1.4 Mi NE of LA 686, St. Martin, LA
Built 1969 Load: 17.8 t ADT: 149
Lee Gordon Rd.
FairOver: GRAND CANAL
1.5 Mi. NE of LA 686, St. Martin, LA
Built 1970 Load: 17.8 t ADT: 132
LA0038
FairOver: CREEK
1.0 M W OF LA 450, Tangipahoa, LA
Built 1961 Load: 17.8 t ADT: 1,706
Weinberger Rd
FairOver: SELZERS CREEK
3.7 MI SE OF SR 22 E, Tangipahoa, LA
Built 1978 Load: 17.8 t ADT: 1,022
LA0661
FairOver: NAVIGATION CANAL
.01 MI NORTH OF LA 315, Terrebonne, LA
Built 1962 Load: 17.8 t ADT: 10,945
RESERVATION BR
FairOver: TERREBONNE BAYOU
0.01 MI E OF LA 24, Terrebonne, LA
Built 1963 Load: 17.8 t ADT: 4,764
FDR 542
FairOver: COULEY CREEK
LOGMI 0.54 FR 504 TO, Winn, LA
Built 1965 Load: 17.8 t ADT: 19
LA0100
FairOver: BAYOU PLAQUEMINE BRULE
.58 MI WEST OF LA 13, Acadia, LA
Built 1949 Load: 18.1 t ADT: 4,120
LA1108
FairOver: CREEK
0.44 Mi S of LA 358, Acadia, LA
Built 1983 Load: 18.1 t ADT: 335
Henry Rd.
FairOver: Simmons Gully
3.2 Mi W. of La 13, Acadia, LA
Built 1976 Load: 18.1 t ADT: 288
LA0010
FairOver: MILL CREEK
0.6 MI. W OF INT LA3206, Allen, LA
Built 1968 Load: 18.1 t ADT: 2,773
LA0112
FairOver: DRAIN
1.1 MI NORTH OF LA 10, Allen, LA
Built 1960 Load: 18.1 t ADT: 1,330
US0061
FairOver: NEW RIVER
50 Ft N of LA 429, Ascension, LA
Built 1956 Load: 18.1 t ADT: 29,303
Cannon Rd
FairOver: DRAINAGE BAYOU
2.4 MI NE LA 44, US 61JCT, Ascension, LA
Built 1984 Load: 18.1 t ADT: 200
Levi Gremillion Rd
FairOver: DRAINAGE DITCH
1.71 MI. EAST OF LA 107, Avoyelles, LA
Built 1965 Load: 18.1 t ADT: 70
LA0110
FairOver: BECKWITH CREEK
2.1 MI. E OF INT LA27, Beauregard, LA
Built 1961 Load: 18.1 t ADT: 2,079
S SMOKEY COVE RD
FairOver: BECKWITH CREEK
3.0 MI W of LA 110, Beauregard, LA
Built 1992 Load: 18.1 t ADT: 45
BEEHIVE LOOP
FairOver: SPRING BRANCH
0.9 MI N of LA 110, Beauregard, LA
Built 1977 Load: 18.1 t ADT: 90
BEEHIVE LOOP
FairOver: BECKWITH CREEK
0.9 MI N OF LA 110, Beauregard, LA
Built 1978 Load: 18.1 t ADT: 90
MITCHELL LOOP
FairOver: PERSIMMON MARSH
0.3 MI E of LA 27, Beauregard, LA
Built 1978 Load: 18.1 t ADT: 12
Foster Arbor Rd
FairOver: TOPY CREEK
3.0 MI. WEST OF LA 1, Bienville, LA
Built 1975 Load: 18.1 t ADT: 100
W. 74th ST
FairOver: 71ST STREET DITCH
0.9 MI S OF HWY 511, Caddo, LA
Built 1963 Load: 18.1 t ADT: 50
LA0027
FairOver: DRAIN
0.5 MI N of LA 108, Calcasieu, LA
Built 1936 Load: 18.1 t ADT: 12,704
US0084
FairOver: FOURMILE BAYOU
2.7 MI EAST OF LA 175, De Soto, LA
Built 1953 Load: 18.1 t ADT: 5,051
US0084
FairOver: BAYOU
.7 MI EAST OF LA 522, De Soto, LA
Built 1953 Load: 18.1 t ADT: 5,350
US0084
FairOver: CLIFTON BAYOU
1.5 MI EAST OF LA 522, De Soto, LA
Built 1953 Load: 18.1 t ADT: 5,350
McCullough Rd
FairOver: BLACKWATER BAYOU
0.2 Mi E of LA 410, East Baton Rouge, LA
Built 1967 Load: 18.1 t ADT: 1,028
LA0596
FairOver: CREEK
4.99 MI NORTH OF US 65, East Carroll, LA
Built 1959 Load: 18.1 t ADT: 80
Brahma Rd.
FairOver: GRAND LOUIS BAYOU
0.7 Mi. E. of Debaillion, Evangeline, LA
Built 1994 Load: 18.1 t ADT: 21
Willie Hill Rd
FairOver: BOGGY BAYOU
LOGMI 0.59 FR 384 TO, Franklin, LA
Built 1970 Load: 18.1 t ADT: 570
FDR 172
FairOver: SKID BRIDGE CREEK
NO DATA ENTERED, Grant, LA
Built 1970 Load: 18.1 t ADT: 15
FDR 175
FairOver: MILL CREEK
NO DATA ENTERED, Grant, LA
Built 1970 Load: 18.1 t ADT: 20
FDR 188
FairOver: CAMP POND CREEK
NO DATA ENTERED, Grant, LA
Built 1964 Load: 18.1 t ADT: 15
FDR 188
FairOver: S FORK CAMP POND CR
NO DATA ENTERED, Grant, LA
Built 1965 Load: 18.1 t ADT: 15
FDR 521
FairOver: WILD OKRA CREEK
LOGMI 1.95 FR 532 TO, Grant, LA
Built 1965 Load: 18.1 t ADT: 26
FDR 530
FairOver: BRUSHY CREEK
NO DATA ENTERED, Grant, LA
Built 1965 Load: 18.1 t ADT: 20
LA0085
FairOver: DELAHOUSSAYE CANAL
1.1 MI WEST OF LA 182, Iberia, LA
Built 1969 Load: 18.1 t ADT: 3,125
US0167
FairOver: CYPRESS CREEK REL.
US0167, Jackson, LA
Built 1951 Load: 18.1 t ADT: 8,018
US0167
FairOver: SUGAR CREEK
18.26 MI N WINN PARISH LN, Jackson, LA
Built 1951 Load: 18.1 t ADT: 8,018
US0167
FairOver: CYPRESS BAYOU REL.
3.6 MI. S. OF LA 818, Jackson, LA
Built 1951 Load: 18.1 t ADT: 8,018
LA0542
FairOver: CREEK
.6 MI EAST OF US 167, Jackson, LA
Built 1959 Load: 18.1 t ADT: 485
LA0542
FairOver: CREEK
1.91 MI EAST OF US 167, Jackson, LA
Built 1959 Load: 18.1 t ADT: 485
LA0542
FairOver: CREEK
.1 MI NORTH OF LA 813-3, Jackson, LA
Built 1967 Load: 18.1 t ADT: 485
LA0155
FairOver: CREEK
2.1 MI EAST OF LA 542, Jackson, LA
Built 1960 Load: 18.1 t ADT: 351
LA0147
FairOver: BROWN CREEK
1.79 MI EAST OF LA 505, Jackson, LA
Built 1970 Load: 18.1 t ADT: 454
B. SEGNETTE ST PK
FairOver: MAIN CANAL
1.0MI. S. OF W.B. EXPWY., Jefferson, LA
Built 1992 Load: 18.1 t
N. Causeway BLVD
FairOver: LA SOUTHERN RR
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 18.1 t ADT: 7,806
MARTIN RD.
FairOver: WELSH CANAL
1.0 M E of LA 99, Jefferson Davis, LA
Built 1971 Load: 18.1 t ADT: 40
PATTERSON ROAD
FairOver: DRAIN
1.6 MI S of LA 102, Jefferson Davis, LA
Built 1999 Load: 18.1 t ADT: 200
E. Peck Rd.
FairOver: ANSELM COULEE
.4 Mi E of Kalist Saloom, Lafayette, LA
Built 1989 Load: 18.1 t ADT: 607
Showing 1,501-1,550 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 |