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
LA0117
FairOver: MCKIMS CREEK
0.74 MI. NORTH OF LA 478, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: HORSE PEN CREEK
3.03 MI. NORTH OF LA 478, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: FLAT SLOUGH
0.51 MI. SOUTH OF LA 120, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: PROVENCAL BAYOU
0.39 MI. SOUTH OF LA 120, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0494
FairOver: BAYOU POISSON
3.04 MI. N OF INT LA119, Natchitoches, LA
Built 1950 Load: 19.1 t ADT: 18,361
Grandpierre Rd
FairOver: BEAVER CREEK
2.2 MI. NE OF LA 116, Rapides, LA
Built 1970 Load: 19.1 t ADT: 75
LA0156
FairOver: MILL CREEK
2.73 MI. EAST OF LA 1233, Winn, LA
Built 1952 Load: 19.1 t ADT: 525
Chester Rd
FairOver: CREEK
LOGMI 5.66 FR 037 TO, Franklin, LA
Built 1965 Load: 19.1 t ADT: 53
LA0127
FairOver: TARVER CREEK
1.7 MI NORTH OF LA 770, LaSalle, LA
Built 1950 Load: 19.1 t ADT: 3,888
Sharp Mello Lane
FairOver: CREEK
0.2 MILES SOUTH OF LA 307, LaSalle, LA
Built 1972 Load: 19.1 t
LA0429
FairOver: NEW RIVER
LA0429, Ascension, LA
Built 1957 Load: 19.1 t ADT: 9,071
LA0621
FairOver: BLACK BAYOU CANAL
0.6 M E of US 61, Ascension, LA
Built 1967 Load: 19.1 t ADT: 7,519
Elvin Dr
FairOver: DRAIN BAYOU
.50 MI SOUTH OF BURBANK, East Baton Rouge, LA
Built 1984 Load: 19.1 t ADT: 1,762
Baird Dr
FairOver: WALDEN LAKE
0.1 Mi. S of Walden Rd, East Baton Rouge, LA
Built 1973 Load: 19.1 t ADT: 522
Southfork Ave
FairOver: DRAIN BAYOU
.20 MI N.SHERWOOD FR.BLVD, East Baton Rouge, LA
Built 1983 Load: 19.1 t ADT: 2,436
US0190
FairOver: BAYOU CLAUSE
4.9 M E of LA 415, West Baton Rouge, LA
Built 2001 Load: 19.1 t ADT: 22,996
LA1036
FairOver: CREEK
0.6 M NW OF LA 441, Livingston, LA
Built 1967 Load: 19.1 t ADT: 426
LA1024
FairOver: CREEK
2.8 M E OF LA 447, Livingston, LA
Built 1956 Load: 19.1 t ADT: 1,020
Gene Bucnel Rd
FairOver: GRAYS CREEK
GENE BUCKNEL AVE W LA1026, Livingston, LA
Built 1982 Load: 19.1 t ADT: 800
LA0043
FairOver: TWELVE MILE CREEK
LA0043, St. Helena, LA
Built 1957 Load: 19.1 t ADT: 865
LA0432
FairOver: DRAIN
0.9 M NW OF LA 38, St. Helena, LA
Built 1965 Load: 19.1 t ADT: 532
LA0059
FairOver: LONG BRANCH BAYOU
0.9 M N OF LA 36, St. Tammany, LA
Built 1954 Load: 19.1 t ADT: 4,612
US0190
FairOver: CREEK
2.8 M E OF LA 445, Tangipahoa, LA
Built 1954 Load: 19.1 t ADT: 8,262
US0190
FairOver: DIXIE CREEK
4.3 M E OF LA 445, Tangipahoa, LA
Built 1954 Load: 19.1 t ADT: 8,262
LA0040
FairOver: BRUSHY BRANCH
0.7 M E OF LA 443, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,634
LA0040
FairOver: CHAPEPEELA CREEK
LA0040, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,634
LA0040
FairOver: CHAP CREEK RELIEF
1.0 M W OF LA 445, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,634
LA1064
FairOver: STILL BRANCH
1 MI. East OF LA 43, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,854
LA0443
FairOver: TANG RIVER RELIEF
LA0443, Tangipahoa, LA
Built 1955 Load: 19.1 t ADT: 6,478
LA0436
FairOver: DRAIN
3.9 M W OF LA 62, Washington, LA
Built 1957 Load: 19.1 t ADT: 1,148
LA0060
FairOver: BERRYS CREEK
2.8 Mi NE of LA 1073, Washington, LA
Built 1966 Load: 19.1 t ADT: 749
LA0436
FairOver: CREEK
0.3 M NE OF LA 21, Washington, LA
Built 1954 Load: 19.1 t ADT: 1,306
Rio Grande St
FairOver: WATER BRANCH
0.1 MI S OF HWY. 10, Washington, LA
Built 1960 Load: 19.1 t ADT: 8,450
Oliver Rd
FairOver: Clark Bayou Trib
1.5 MILES EAST OF LA 157, Bossier, LA
Built 2009 Load: 19.2 t ADT: 100
B. SEGNETTE ST PK
FairOver: RAILROAD CANAL
0.45 MI.S. OF W.B.EXPWY., Jefferson, LA
Built 1996 Load: 19.3 t
LA3039
FairOver: BAYOU PORTAGE
5.7 MI NORTH OF LA 347, St. Martin, LA
Built 1961 Load: 19.3 t ADT: 1,807
Division Rd
FairOver: COULEE
1.0 Mi SW of LA 345, St. Martin, LA
Built 1970 Load: 19.3 t ADT: 129
OSCAR LUM RD
FairOver: WILLIAMSON CREEK
.6 MI. N. INT. 383, Morehouse, LA
Built 1960 Load: 19.3 t ADT: 80
HARRELL RD
FairOver: STEEP BAYOU
1 MILE NORTH OF HWY 80, Ouachita, LA
Built 2013 Load: 19.3 t ADT: 731
CYPRESS SCHOOL RD
FairOver: CYPRESS CREEK
4 MI S OKALOOSA, Ouachita, LA
Built 1979 Load: 19.3 t ADT: 235
GOOD HOPE RD
FairOver: N TUPAWEK BAYOU
3 MI NW WEST MONROE, Ouachita, LA
Built 1978 Load: 19.3 t ADT: 3,947
LA0576
FairOver: CREEK
.6 MI EAST OF LA 622, Richland, LA
Built 1968 Load: 19.3 t ADT: 162
GARRIE CUT-OFF
FairOver: HAMPTON COULEE
2.8 MI EAST OF LA 109, Calcasieu, LA
Built 1960 Load: 19.3 t ADT: 558
Oak Ridge Rd
FairOver: CANAL
1 TENTH OF A MILE EAST OF, Livingston, LA
Built 2013 Load: 19.3 t ADT: 100
Willie Walker Rd
FairOver: CREEK
0.10 MILES EAST OF LA. 43, Livingston, LA
Built 1990 Load: 19.3 t ADT: 2
MILLER ROAD
FairOver: BAYOU BARBARY
2.75 MI N OF LA. 444, Livingston, LA
Built 2017 Load: 19.3 t ADT: 50
McCarrol Rd
FairOver: CREEK
4.0 MI SE OF EXIT 43, Livingston, LA
Built 1960 Load: 19.3 t ADT: 400
Old Hwy. 41 Spur
FairOver: DRAIN
0.20 SOUTHWEST OF LA 41, St. Tammany, LA
Built 2005 Load: 19.3 t ADT: 2,877
I0010
FairOver: LOYOLA AVE.
1.2 MI EAST OF I-310, Jefferson, LA
Built 1971 Load: 19.4 t ADT: 126,119
I0010
FairOver: LOYOLA AVE
1.2 MI EAST OF I-310, Jefferson, LA
Built 1971 Load: 19.4 t ADT: 41,695
Showing 901-950 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.