Total Bridges
12,698
Public highway bridges in Louisiana
State profile · Above median Poor share
Louisiana bridge safety
According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Louisiana.
- 12,698
- Public bridges
- 38.7%
- Good condition
- 11.5%
- Poor condition
Louisiana holds 12,698 public highway bridges (#24 of 52 by inventory) with a 11.48% Poor share (#8 of 52 by Poor share).
That is 11.5% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 45 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.
Inventory: FHWA NBI 2024 · last ETL August 2026
Good Condition
38.7%
4,919 bridges rated 7-9
-11.3pp vs 50% benchmark
Poor Condition
11.5%
1,458 bridges whose lowest applicable component is rated 0-4
4.0pp vs national avg 7.5%
Louisiana vs national bridge condition
Louisiana - Good condition share 38.7%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana - Poor-condition share 38.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.
Louisiana in the national condition pattern
Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.
Louisiana vs all states by public bridge inventory
Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges
12,698 24th of 54 higher than 30 of 54 states
States and territories, banded by public bridge inventory size
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · 2024
Read the rank neighborhood for Louisiana
The highlighted point is Louisiana: 12,698 bridges and 11.48% in Poor condition, rank #45 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Louisiana on that same Poor-share ordering:
- North Dakota: 4,255 bridges · 10.98% Poor
- Michigan: 11,371 bridges · 11.27% Poor
- Louisiana: 12,698 bridges · 11.48% Poor
- Pennsylvania: 23,299 bridges · 12.58% Poor
- Guam: 47 bridges · 12.77% Poor
The full national sortable table lives on the rankings page.
Material families in Louisiana
Exclusive FHWA material families across all 12,698 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.
Who maintains Louisiana’s inventory
State agency holds 61.0% of the 12,698 public highway bridges filed under Louisiana in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.
When Louisiana’s bridges were built
Pre-1950 construction accounts for 4.2% of the 12,698 bridges with a recorded original year in Louisiana. Era bands are orthogonal to the Poor-share ranking above.
Condition Distribution
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 322 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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Louisiana on the same metric.
ND
North Dakota
10.98% top marginal rate
MI
Michigan
11.27% top marginal rate
LA
Louisiana
11.48% top marginal rate
PA
Pennsylvania
12.58% top marginal rate
GU
Guam
12.77% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
Avenue E
PoorOver: DRESSER CANAL
0.10 MI WEST OF LA 1, Lafourche, LA
Built 1952 Load: 0.0 t
VALENTINE BRIDGE R
PoorOver: LAFOURCHE BAYOU
0.01 MI N OF LA 1, Lafourche, LA
Built 1969 Load: 0.0 t
UNNAMED RD
PoorOver: I-10
3.1 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
UNNAMED RD
PoorOver: I-10
4.5 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
Almonaster Ave
PoorOver: INNER HARBOR NAVIGATION
0.01 MI E OF FRANCE RD, Orleans, LA
Built 1919 Load: 0.0 t
Beiber Rd
PoorOver: NEZPIQUE BAYOU
3.65 Mi W of La 1160, Evangeline, LA
Built 1965 Load: 0.0 t ADT: 70
All Bridges in Louisiana
LINE RD
FairOver: GUM SLOUGH
0.3 MI WEST OF LA 109, Calcasieu, LA
Built 1986 Load: 18.5 t ADT: 229
WILLIAMS ST
FairOver: VERDING BAYOU
0.1 MI S of JOHN STINE RD, Calcasieu, LA
Built 1975 Load: 18.5 t ADT: 252
FARM SUPPLY RD.
FairOver: CHENE BAYOU
0.08 MI N of LA 1126, Jefferson Davis, LA
Built 1975 Load: 18.5 t ADT: 80
AUGUSTINE RD.
FairOver: GULLY
0.4 MI N of LA 101, Jefferson Davis, LA
Built 1970 Load: 18.5 t ADT: 70
ARDOIN ROAD
FairOver: BAYOU GRAND MARAIS
1.4 MI W of INT LA 26, Jefferson Davis, LA
Built 1965 Load: 18.5 t ADT: 50
LA0029
FairOver: TURNER BAYOU
0.82 MI. NORTH OF LA 1176, Avoyelles, LA
Built 1952 Load: 18.5 t ADT: 1,799
Sim-Bordelon Ctoff
FairOver: BAYOU DES GLAISES
APPROX. 1 MI. N. OF LA 1, Avoyelles, LA
Built 1992 Load: 18.5 t ADT: 250
Bordebis Rd
FairOver: BAYOU DULAC
0.01 MI. EAST OF LA 1185, Avoyelles, LA
Built 1994 Load: 18.5 t ADT: 100
FH 59
FairOver: STEEP HILL CREEK
NO DATA ENTERED, Natchitoches, LA
Built 1967 Load: 18.5 t ADT: 80
US0165
FairOver: UP RR & LA 1230
16.94 M N JCT LA 8, Grant, LA
Built 2009 Load: 18.5 t ADT: 4,538
Hunt Rd
FairOver: DIVERSION CANAL
8.01 LOG MI EAST OF LA 28, LaSalle, LA
Built 1966 Load: 18.5 t
Beco Rd
FairOver: Babin Canal
0.44 Mi. N. of LA 935, Ascension, LA
Built 1979 Load: 18.5 t ADT: 1,336
LA0959
FairOver: SANDY CREEK REL
0.3 M NW of LA 959&LA 409, East Feliciana, LA
Built 1960 Load: 18.5 t ADT: 1,679
Gracie St
FairOver: LEVEE BORROW PIT
.01 Mi. E of B. Sorrel Rd, Iberville, LA
Built 1995 Load: 18.5 t ADT: 100
LA0010
FairOver: JASPER CREEK
0.16 Mi E of US 61, West Feliciana, LA
Built 1948 Load: 18.5 t ADT: 2,761
W. Hall Ave
FairOver: CREEK
0.6MI.E.OF CARROL RD, St. Tammany, LA
Built 1970 Load: 18.5 t ADT: 4,504
Berry Todd Rd
FairOver: BRIDGE OVER CREEK
0.90 MI E. OF LA 434, St. Tammany, LA
Built 1984 Load: 18.5 t ADT: 80
Krentel Rd
FairOver: BRIDGE OVER LACOMBE BAYO
0.7 MI N. OF LA 434, St. Tammany, LA
Built 1984 Load: 18.5 t ADT: 100
Lavinghouse Rd
FairOver: SIMMONS CREEK
0.72M SOUTH OF LA 40, St. Tammany, LA
Built 1992 Load: 18.5 t ADT: 40
Old Covington Hwy.
FairOver: SELSERS CREEK
1.3 M.N/E JCT.LA 3158&I12, Tangipahoa, LA
Built 1958 Load: 18.5 t ADT: 7,316
DALLAS STREET
FairOver: WHISKEY CHITTO CREEK
VE 844 412, Vernon, LA
Built 1978 Load: 18.5 t ADT: 20
HARVEY BLVD
FairOver: TRAPP CANAL
0.45 MI. E. OF MANHATTAN, Jefferson, LA
Built 1984 Load: 18.8 t ADT: 6,000
S CAROLLTON AVE
FairOver: WASHINGTON.AVE.CANAL
.2 MI N.OF AIRLINE H, Orleans, LA
Built 1954 Load: 18.8 t
PAUL VICE BRIDGE
FairOver: DULARGE BAYOU
0001 LOG MI FROM IN, Terrebonne, LA
Built 1966 Load: 18.8 t ADT: 240
N. Hollywood Rd
FairOver: ST. LOUIS CANAL
0.8 MI E OF LA 24, Terrebonne, LA
Built 1986 Load: 18.8 t ADT: 8,236
Funderburk Ave
FairOver: BAYOU TERREBONNE
0.01 M W OF LA 24, Terrebonne, LA
Built 1965 Load: 18.8 t ADT: 5,001
DEADWOOD RD
FairOver: COULEE
0.3 MI NORTH OF LA 20, Terrebonne, LA
Built 1966 Load: 18.8 t ADT: 358
LA0095
FairOver: BAYOU WYKOFF
0.7 MI W OF LA 356, Acadia, LA
Built 1963 Load: 18.8 t ADT: 5,275
LA0089
FairOver: ROMERO CANAL
0.46 MI WEST OF LA 88, Lafayette, LA
Built 1959 Load: 18.8 t ADT: 1,840
LA0339
FairOver: ANSLEM COULEE
0.04 MI N of LA 92, Lafayette, LA
Built 1957 Load: 18.8 t ADT: 7,704
Denais Rd.
FairOver: COULEE
.01 Miles N Leblanc Rd, Lafayette, LA
Built 1978 Load: 18.8 t ADT: 210
Elias G. Rd.
FairOver: ILE DES CANNES COULEE
0.8 Mi W. of US 167, Lafayette, LA
Built 1972 Load: 18.8 t ADT: 180
Beau Bassin
FairOver: VERMILION RIVER
1.34 Mi NW of LA 98, Lafayette, LA
Built 1970 Load: 18.8 t ADT: 660
E. Armand St.
FairOver: COULEE
0.06 Mi NE of LA 182, Lafayette, LA
Built 1949 Load: 18.8 t ADT: 200
I0049
FairOver: BAYOU CARENCRO
1.0 MI NORTH OF LA 182, St. Landry, LA
Built 1963 Load: 18.8 t ADT: 44,889
Botany Bay Rd
FairOver: Bayou Portage
1.1 Mi E of Seven Arpent, St. Landry, LA
Built 1975 Load: 18.8 t ADT: 150
Park Ave.
FairOver: Bayou Tesson
0.9 Mi. E. of La 357, St. Landry, LA
Built 1936 Load: 18.8 t ADT: 1,500
WPA Rd
FairOver: BAYOU WAUKSHA
2.8 Mi SW. of US 71, St. Landry, LA
Built 1978 Load: 18.8 t ADT: 750
Johnson Rd
FairOver: DUMOLIN CANAL
0.8 Mi. N. of LA 678, St. Martin, LA
Built 1970 Load: 18.8 t ADT: 226
Johnson Rd
FairOver: DUMOLIN CANAL
1.2 Mi. N. of LA 678, St. Martin, LA
Built 1970 Load: 18.8 t ADT: 226
Pepper Rd
FairOver: COULEE
0.8 Mi S of US 90, St. Mary, LA
Built 1967 Load: 18.8 t ADT: 330
LA0696
FairOver: COULEE KENNY
2.3 MI W. OF LA 343, Vermilion, LA
Built 1964 Load: 18.8 t ADT: 736
LA0003
FairOver: DRAIN
3.11 MI NORTH OF LA 2, Bossier, LA
Built 1935 Load: 18.8 t ADT: 2,238
LA0164
FairOver: CANEY BRANCH
.78 MI EAST OF LA 614, Bossier, LA
Built 1943 Load: 18.8 t ADT: 3,472
Ellerbe Rd
FairOver: PRAIRIE RIVER
1 MI N.W. OF CASPIAN, Caddo, LA
Built 1962 Load: 18.8 t ADT: 61
Barron Rd
FairOver: BARRON RD TY TO BOGGY B
1.7 MI EAST OF US 171, Caddo, LA
Built 1992 Load: 18.8 t ADT: 4,787
QUAIL RD
FairOver: GILMER BAYOU
1.3 MI SOUTH OF LA 511, Caddo, LA
Built 1982 Load: 18.8 t ADT: 521
BERKSHIRE PLACE
FairOver: PIERREMONT DITCH
0.1 MI. EAST OF GILBERT, Caddo, LA
Built 1982 Load: 18.8 t ADT: 250
HOLLYWOOD AVENUE
FairOver: COURTESY LANE DITCH
1.9 MI. WEST OF U.S., Caddo, LA
Built 1965 Load: 18.8 t ADT: 10,084
SOUTHERN AVE
FairOver: KINGS HIGHWAY
2.8M NORTH OF LA 511, Caddo, LA
Built 1992 Load: 18.8 t ADT: 8,132
Showing 751-800 of 12,698 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
What to do with this
Use Louisiana's inventory picture to drill to a county or a specific span.
- Browse counties in Louisiana and open the highest-Poor shares first. County list
- See where this state sits among peers on Poor-condition share. State rankings
- Compare this state with another jurisdiction on the same measures. State compare
NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Louisiana Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.