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
LA0132
FairOver: CREEK
2.5 MI WEST OF LA 859, Franklin, LA
Built 1965 Load: 15.2 t ADT: 431
LA0865
FairOver: ASH SLOUGH
1.4 MI EAST OF LA 4, Franklin, LA
Built 1970 Load: 15.2 t ADT: 1,879
Bert Allen Rd
FairOver: DRAINAGE BAYOU
0.4 M N of LA 621, Ascension, LA
Built 1969 Load: 15.2 t ADT: 100
LA0010
FairOver: BLACK CREEK
1 M E of LA 10&LA 68, East Feliciana, LA
Built 1951 Load: 15.2 t ADT: 5,830
US0190
FairOver: CREEK
0.2 M W OF LA 1024, Livingston, LA
Built 1953 Load: 15.2 t ADT: 8,880
Eden Isle Subd.
FairOver: BR. OVER EDEN ISLES CANA
2.4 MI S JCT US N & LA433, St. Tammany, LA
Built 1974 Load: 15.2 t ADT: 4,576
LA1172
FairOver: BAYOU
3.0 MI EAST OF LA 13, Evangeline, LA
Built 1966 Load: 15.4 t ADT: 704
CHIICOT STATE PARK
FairOver: CREEK
0.9 Mi E of La 3042, Evangeline, LA
Built 1983 Load: 15.4 t ADT: 40
LA0321
FairOver: CREEK
0.71 MI S OF LA 347, St. Martin, LA
Built 1966 Load: 15.4 t ADT: 1,732
LA0331
FairOver: CREEK
1.41 MI S. OF LA 14, Vermilion, LA
Built 1951 Load: 15.4 t ADT: 1,638
CORPRAL MARCEAUX R
FairOver: ZIGLER CANAL
1.2 Mi S of Liberty Farm, Vermilion, LA
Built 1972 Load: 15.4 t ADT: 100
Alvie Rd
FairOver: COULEE
0.1 Mi. S of LA 714, Vermilion, LA
Built 1989 Load: 15.4 t ADT: 90
LA0542
FairOver: CREEK
1.15 MI EAST OF US 167, Jackson, LA
Built 1959 Load: 15.4 t ADT: 485
PEA RIDGE RD
FairOver: SIXTEEN BRANCH CREEK
3 MI W CEDARTON, Lincoln, LA
Built 1978 Load: 15.4 t ADT: 290
LA3048
FairOver: BEE BAYOU
2.0 MI NORTH OF LA 584, Richland, LA
Built 1960 Load: 15.4 t ADT: 1,594
SPELL RD
FairOver: GUM SLOUGH
0.3 MI WEST OF LA 109, Calcasieu, LA
Built 1994 Load: 15.4 t ADT: 20
LA0384
FairOver: ICWW-SWEET/GRAND LAKE
0.9 MI. W OF INT LA 385, Cameron, LA
Built 1964 Load: 15.4 t ADT: 1,601
BEAUFORT STREET
FairOver: DRAINAGE CANAL
0.52 MI E OF LA 99, Jefferson Davis, LA
Built 2019 Load: 15.4 t ADT: 200
LA0004
FairOver: SUGAR CREEK
1.4 MI EAST OF LA 557, Caldwell, LA
Built 1954 Load: 15.4 t ADT: 311
French Turn Rd
FairOver: DEEP BAYOU
2.466 mi. SE of LA 577, Franklin, LA
Built 1968 Load: 15.4 t ADT: 92
LA0569
FairOver: BAYOU L-ARGENT
1.21 MI SOUTH OF LA 568, Tensas, LA
Built 1954 Load: 15.4 t ADT: 105
John Savoy Rd
FairOver: NEW RIVER
0.2 MI N OF LA 22, Ascension, LA
Built 1960 Load: 15.4 t ADT: 40
LA0444
FairOver: BAYOU BARBARY
3.7 M E OF LA 63, Livingston, LA
Built 1955 Load: 15.4 t ADT: 3,782
LA0038
FairOver: JOINERS CREEK
3.2 M W OF LA 43, St. Helena, LA
Built 1954 Load: 15.4 t ADT: 933
LA1063
FairOver: CREEK
0.9 M W OF US 51, Tangipahoa, LA
Built 1949 Load: 15.4 t ADT: 1,130
LA1063
FairOver: CANAL
0.8 M W OF US 51, Tangipahoa, LA
Built 1956 Load: 15.4 t ADT: 1,130
BALLTOWN ROAD
FairOver: CREEK
1.2 M E OF LA 21, Washington, LA
Built 1959 Load: 15.4 t ADT: 1,692
Old Spanish Trail
FairOver: Coulee
0.5 Mi. E. of La 91, Acadia, LA
Built 1975 Load: 15.6 t ADT: 96
W. Jefferson St.
FairOver: BAYOU TESSON
0.3 Mi W. of La 182, St. Landry, LA
Built 1965 Load: 15.6 t ADT: 700
W. South St
FairOver: Bayou Tesson
.76 Mi. East of LA 357, St. Landry, LA
Built 1936 Load: 15.6 t ADT: 800
Horecky Rd
FairOver: BAYOU WAUKSHA
1.8M SW of Lee Richard LP, St. Landry, LA
Built 1986 Load: 15.6 t ADT: 240
US0084
FairOver: BAYOU GRAND CANE
1.6 MI EAST OF LA 191, De Soto, LA
Built 1951 Load: 15.6 t ADT: 4,251
LA1147
FairOver: SPRING CREEK BR
9.2 MI. N OF INT LA113, Beauregard, LA
Built 1967 Load: 15.6 t ADT: 708
POTTER RD.
FairOver: THORNWELL DRAINAGE CANAL
0.6 MI N of LA 14, Jefferson Davis, LA
Built 1976 Load: 15.6 t ADT: 160
LA0865
FairOver: TURKEY CREEK
.2 MI NORTH OF LA 4, Franklin, LA
Built 1971 Load: 15.6 t ADT: 892
LA0037
FairOver: SANDY CREEK
LA0037, East Baton Rouge, LA
Built 1957 Load: 15.6 t ADT: 3,548
LA0404
FairOver: LEVY CANAL
0.52 M SW of LA 404&LA 69, Iberville, LA
Built 1962 Load: 15.6 t ADT: 551
Eden Isle Subd.
FairOver: BR. OVER EDEN ISLES CANA
2.4 MI S JCT US 11 & 433, St. Tammany, LA
Built 1974 Load: 15.6 t ADT: 5,979
Lee Rd
FairOver: HOUSE CREEK
0.2 M NORTH OF LA 1129, St. Tammany, LA
Built 1990 Load: 15.6 t ADT: 814
OLD LA182 XOVER
FairOver: LAFOURCHE BAYOU
0.01 MI N. OF LA 1, Lafourche, LA
Built 1968 Load: 15.9 t ADT: 4,400
US0090
FairOver: OVER CITY STREETS
.58 MI EAST OF US 90, Orleans, LA
Built 1956 Load: 15.9 t ADT: 49,920
I0310
FairOver: LA 3127 & I-310
2.9 MI EAST OF LA 3160, St. Charles, LA
Built 1986 Load: 15.9 t ADT: 15,642
KLONDYKE BRIDGE
FairOver: TERREBONNE BAYOU
0001 LOG MI FROM INT 243, Terrebonne, LA
Built 1983 Load: 15.9 t ADT: 5,080
Gall Rd.
FairOver: Coulee
1.4 Mi. S. of La 83, Iberia, LA
Built 1974 Load: 15.9 t ADT: 21
LA0010
FairOver: BAYOU COURTABLEAU
0.02 MI EAST OF LA 103, St. Landry, LA
Built 1936 Load: 15.9 t ADT: 1,533
Verdunville Rd.
FairOver: Verdunville Canal
2.2 Mi. E of LA 87, St. Mary, LA
Built 1967 Load: 15.9 t ADT: 200
LA0507
FairOver: DRAIN
.49 MI WEST OF LA 153, Bienville, LA
Built 1969 Load: 15.9 t ADT: 592
SHED RD
FairOver: I-220
2.8 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 15.9 t ADT: 15,150
Capps City Rd
FairOver: E.FORK OF STATELINE CREE
0.5 MI. E. OF LA 1, Caddo, LA
Built 1983 Load: 15.9 t ADT: 96
LA3015
FairOver: BUSHNECK BAYOU
1.0 MI WEST OF LA 5, De Soto, LA
Built 1979 Load: 15.9 t ADT: 462
Showing 351-400 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.