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
LA0413
PoorOver: FALSE BAYOU
0.1 Mi. N of LA 414, Pointe Coupee, LA
Built 1972 Load: 16.5 t ADT: 5,896
US0011
PoorOver: NO&NE RAILROAD
1.05 MI S OF I-12 EB, St. Tammany, LA
Built 1937 Load: 16.5 t ADT: 15,607
Tiger branch
PoorOver: BR. OVER TIGER BRANCH
1.40 EAST OF LA 25, St. Tammany, LA
Built 1987 Load: 16.5 t ADT: 300
W. Yellow water Rd
PoorOver: CREEK
1.2 MI NW OF LA 51 E, Tangipahoa, LA
Built 1978 Load: 16.5 t ADT: 1,220
Sanchez Rd
PoorOver: GRAND BAYOU
0065 LOG MI FROM INT, Lafourche, LA
Built 1955 Load: 16.8 t ADT: 901
GRAVOLET RD
PoorOver: DRAINAGE CANAL
0.01 MI. W. OF HWY. 39, Plaquemines, LA
Built 1968 Load: 16.8 t ADT: 150
LA0331
PoorOver: BAYOU TIGRE
0.55 MI S. OF LA 14, Vermilion, LA
Built 1977 Load: 16.8 t ADT: 1,518
US0080
PoorOver: CROWS CREEK
1.98 MI NORTH OF I-20, Bienville, LA
Built 1954 Load: 16.8 t ADT: 780
LA0009
PoorOver: BLOOMS MILL CREEK
4.3 MI NORTH OF NORTH INT, Bienville, LA
Built 1971 Load: 16.8 t ADT: 771
US0071
PoorOver: ICG RR
.5 MI NORTH OF I-20, Caddo, LA
Built 1937 Load: 16.8 t ADT: 5,484
US0371
PoorOver: BRUSHY CREEK
2.8 Mi. North of LA 531, Webster, LA
Built 1950 Load: 16.8 t ADT: 6,469
LOUISIANA AVE
PoorOver: CONTRABAND BAYOU
0.3 MI. N. OF LA 3186, Calcasieu, LA
Built 1957 Load: 16.8 t ADT: 8,942
US0071
PoorOver: SALINE BAYOU
.7 MI. N OF INT LA477, Natchitoches, LA
Built 1956 Load: 16.8 t ADT: 1,691
LA0127
PoorOver: FLAT CREEK RELIEF
4.18 MI. NW CALDWELL LINE, Winn, LA
Built 1980 Load: 16.8 t ADT: 291
Joe Sevario Rd
PoorOver: Sides Bayou
0.8 Mi S. of LA 933, Ascension, LA
Built 1969 Load: 16.8 t ADT: 700
Cedarcrest Ave
PoorOver: WEINER CREEK
1 MI S OF LA 426, East Baton Rouge, LA
Built 1965 Load: 16.8 t ADT: 12,417
Troy St
PoorOver: DRAIN BAYOU
TROY STREET, East Baton Rouge, LA
Built 1975 Load: 16.8 t ADT: 600
Carney Rd
PoorOver: BAYOU BATON ROUGE
0.2 M W OF LA 964, East Baton Rouge, LA
Built 1965 Load: 16.8 t ADT: 180
LA0970
PoorOver: CREEK
1.40 M E of LA 417, Pointe Coupee, LA
Built 1971 Load: 16.8 t ADT: 84
Tom Crichton Rd
PoorOver: MILE CREEK
0.3 MI W OF HWY 7, Webster, LA
Built 1976 Load: 17.0 t ADT: 49
JOSEPH THOMAS RD
PoorOver: PATRICK CREEK
1 MI S HWY 80, Ouachita, LA
Built 1960 Load: 17.0 t ADT: 104
L Williams Rd
PoorOver: UNAMED CREEK
0.7 M N of LA 961, East Feliciana, LA
Built 1975 Load: 17.0 t ADT: 304
MLK Jr. Dr.
PoorOver: PONCHATOULA CREEK
1.2 MI NE OF JCT 190&1065, Tangipahoa, LA
Built 1982 Load: 17.0 t ADT: 2,010
Benton Rd
PoorOver: Lyons Point Gully
0.1 Mi. S. of La 92, Acadia, LA
Built 1974 Load: 17.1 t ADT: 96
Ridge Rd
PoorOver: CASTOR CREEK
1.8 MI. EAST OF LA 4, Bienville, LA
Built 1976 Load: 17.1 t ADT: 100
Grover Jones Rd
PoorOver: BAKER CREEK
2.7 MI. S.E. OF U.S., Bienville, LA
Built 1977 Load: 17.1 t ADT: 150
Pistol Thomas Rd
PoorOver: BLACK BAYOU
0.48 MI. E. OF LA. 159, Webster, LA
Built 1956 Load: 17.1 t ADT: 110
LA0594
PoorOver: CANEY CREEK
4.02 MI NORTH OF US 80, Ouachita, LA
Built 1954 Load: 17.1 t ADT: 2,642
ARDOIN COVE ROAD
PoorOver: CREEK
1.9 M EAST OF INT 262, Jefferson Davis, LA
Built 1990 Load: 17.1 t ADT: 50
HerbertJuneau Xing
PoorOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1979 Load: 17.1 t ADT: 80
Nelson Rd
PoorOver: BRUSHY CREEK
0.13 M. W. OF LA 120, Natchitoches, LA
Built 1978 Load: 17.1 t ADT: 72
BUCKY MURDOCK RD
PoorOver: BAYOU SCIE
0.75 MI. SOUTH OF US 171, Sabine, LA
Built 1965 Load: 17.1 t ADT: 200
Boggy Bayou Rd
PoorOver: CREEK
LOGMI 5.8 MI E Hwy 129, Concordia, LA
Built 1960 Load: 17.1 t
LA0038
PoorOver: DRAIN
0.6 M E OF LA 432, St. Helena, LA
Built 1954 Load: 17.1 t ADT: 933
Shingle Mill Rd
PoorOver: ANDERSON CANAL
0.3 N. OF RT. 142 MILLRD, Tangipahoa, LA
Built 1975 Load: 17.1 t ADT: 10
Lanier Ln
PoorOver: CREEK
5 MI NE OF SR 22 EXI, Tangipahoa, LA
Built 1970 Load: 17.1 t ADT: 12
Sibley Rd
PoorOver: MORAN BRANCH
4 MI SW OF 442 EXIT, Tangipahoa, LA
Built 1960 Load: 17.1 t ADT: 204
Stateline Rd
PoorOver: DRAIN
1.1 MI SE US 51 & LA 1054, Tangipahoa, LA
Built 1984 Load: 17.1 t ADT: 128
Morrison Rd
PoorOver: SAINT CHARLES CANAL
0.5 M E. OF NEW CASTLE, Orleans, LA
Built 1960 Load: 17.2 t
US0071
PoorOver: ICG RR
.5 MI NORTH OF I-20, Caddo, LA
Built 1940 Load: 17.2 t ADT: 5,484
LA0160
PoorOver: DORCHEAT BAYOU RELIEF
1.22 MI West OF LA 3008, Webster, LA
Built 1977 Load: 17.2 t ADT: 537
LA0134
PoorOver: CREEK
2.8 MI EAST OF LA 136, Ouachita, LA
Built 1957 Load: 17.2 t ADT: 3,462
MCLEMORE RD
PoorOver: BEE BAYOU
LOGMI 5.05 FR 0DE TO, Richland, LA
Built 1966 Load: 17.2 t ADT: 320
LA0110
PoorOver: CREEK
4.3 MI W of LA 27, Beauregard, LA
Built 1982 Load: 17.2 t ADT: 1,947
SHELL BEACH DR
PoorOver: DRAINAGE CANAL
0.3 MI S of LA 385, Calcasieu, LA
Built 1937 Load: 17.2 t ADT: 8,548
Turkey Cr Cut-off
PoorOver: CLEAR CREEK
3.6 MILES SE OF US 165, Rapides, LA
Built 1980 Load: 17.2 t ADT: 300
LA0008
PoorOver: FORKER CREEK
0.1 M E OF W JCT. LA 111, Vernon, LA
Built 1950 Load: 17.2 t ADT: 1,229
Double Church
PoorOver: COULEY CREEK
APP. 2.5 MI. S. OF US 84, Winn, LA
Built 1979 Load: 17.2 t ADT: 39
LA0943
PoorOver: BAYOU MCCALL
1.4 M W of LA 1&LA 943, Ascension, LA
Built 1972 Load: 17.2 t ADT: 350
Robinson Rd
PoorOver: FLANAGAN BAYOU
1 MI N. NW. OF PRIDE LA, East Baton Rouge, LA
Built 1980 Load: 17.2 t ADT: 790
Showing 11,951-12,000 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.