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
US0065
FairOver: BAYOU
1.7 MI NORTH OF LA 888, Tensas, LA
Built 1953 Load: 32.4 t ADT: 2,109
US0061
FairOver: CANAL DRAIN
3 MI N INTER US 61 &LA22, Ascension, LA
Built 1982 Load: 32.4 t ADT: 29,303
LA0001
FairOver: MCMANOR CANAL
5.8 M SE of LA 1&LA 69, Ascension, LA
Built 1935 Load: 32.4 t ADT: 7,858
LA0044
FairOver: DRAINAGE
ON LA 44 1.0 MI N. LA 931, Ascension, LA
Built 1999 Load: 32.4 t ADT: 12,382
LA0030
FairOver: STREAM
0.4 M W of LA 30&LA 3251, Ascension, LA
Built 1968 Load: 32.4 t ADT: 16,790
I0010
FairOver: DRAIN
0.6 M S of I-10&LA 30, Ascension, LA
Built 1975 Load: 32.4 t ADT: 60,802
I0010
FairOver: BOYLE BAYOU
1.3 M S of I-10&LA 30, Ascension, LA
Built 1979 Load: 32.4 t ADT: 60,802
I0010
FairOver: HACKETT CANAL
1.2 M SE of I-10&LA 44, Ascension, LA
Built 1979 Load: 32.4 t ADT: 57,444
LA0928
FairOver: JIM BAYOU
0.8 M W of I-10&LA 73, Ascension, LA
Built 1966 Load: 32.4 t ADT: 5,446
Old Hammond Hwy
FairOver: LIVELY BAYOU
1 MILE N OF I-12, East Baton Rouge, LA
Built 2006 Load: 32.4 t ADT: 7,800
Ben Hur Rd
FairOver: BAYOU
0.2 M W of LA 42, East Baton Rouge, LA
Built 2000 Load: 32.4 t ADT: 7,263
LA0019
FairOver: DRAIN
0.4 M N of LA 64, East Baton Rouge, LA
Built 1988 Load: 32.4 t ADT: 11,198
US0061
FairOver: WARDS CREEK
0.3 M N of US 61&LA 426, East Baton Rouge, LA
Built 1965 Load: 32.4 t ADT: 54,042
US0061
FairOver: WARD CREEK
0.26 M. S OF LA 37, East Baton Rouge, LA
Built 1940 Load: 32.4 t ADT: 13,549
US0061
FairOver: WARDS CREEK NB.
0.2 M W of US 61&US 190, East Baton Rouge, LA
Built 1959 Load: 32.4 t ADT: 24,979
US0190
FairOver: DRAIN
2.8 M W of US 61&US 190, East Baton Rouge, LA
Built 1958 Load: 32.4 t ADT: 24,571
LA0073
FairOver: WARD CREEK
0.63 M. E OF LA 427, East Baton Rouge, LA
Built 1960 Load: 32.4 t ADT: 22,611
Church St
FairOver: STREAM
.24 MI E of LA 964, East Baton Rouge, LA
Built 1973 Load: 32.4 t ADT: 20,800
LA0037
FairOver: US 61
1.3 Mi W of LA 946, East Baton Rouge, LA
Built 1968 Load: 32.4 t ADT: 20,370
LA3034
FairOver: BEAVER BAYOU
2.1 M W of LA 37, East Baton Rouge, LA
Built 1955 Load: 32.4 t ADT: 14,635
LA0030
FairOver: STREAM
4.0M NW of LA 42, East Baton Rouge, LA
Built 1961 Load: 32.4 t ADT: 12,779
I0010
FairOver: DRAIN
2.7 M SE of I-10&I-12, East Baton Rouge, LA
Built 1972 Load: 32.4 t ADT: 137,847
I0010
FairOver: DRAIN
.5 MI. E OF JCT LA 1248, East Baton Rouge, LA
Built 2006 Load: 32.4 t ADT: 15,061
I0010
FairOver: DRAIN
0.5 MILE EAST OF LA 1248, East Baton Rouge, LA
Built 2006 Load: 32.4 t ADT: 14,120
I0010
FairOver: DRAIN
3.0 M SE of I-10&I-12, East Baton Rouge, LA
Built 1972 Load: 32.4 t ADT: 137,847
I0010
FairOver: DRAIN
3.2 M SE of I-10&I-12, East Baton Rouge, LA
Built 1972 Load: 32.4 t ADT: 137,847
I0010
FairOver: DRAIN
0.6 M SE of I-10&LA 3246, East Baton Rouge, LA
Built 1974 Load: 32.4 t ADT: 137,847
I0010
FairOver: DRAIN
2.8 M SE of I-10&LA 3246, East Baton Rouge, LA
Built 1974 Load: 32.4 t ADT: 137,847
I0110
FairOver: NORTH DALE CANAL
1.2 M N of I-10&I-110, East Baton Rouge, LA
Built 1958 Load: 32.4 t ADT: 51,236
I0012
FairOver: DRAIN NO NAME
1.0 M E of I-10&I-12, East Baton Rouge, LA
Built 1967 Load: 32.4 t ADT: 28,013
I0012
FairOver: DRAIN
1.5 M E of I-10&I-12, East Baton Rouge, LA
Built 1967 Load: 32.4 t ADT: 28,013
I0012
FairOver: HONEYCUT BAYOU
4.4 M E of I-12&US 61, East Baton Rouge, LA
Built 1967 Load: 32.4 t ADT: 28,013
Highland Rd
FairOver: DRAINAGE CANAL
LOG MILE 00.01, East Baton Rouge, LA
Built 1948 Load: 32.4 t ADT: 10,420
Tiger Bend Rd
FairOver: CLAY CUT BAYOU
3.2 MI. NE JCT I-10 LA 42, East Baton Rouge, LA
Built 1985 Load: 32.4 t ADT: 12,730
North St
FairOver: WARDS CREEK
0.3 MI E OF N FOSTER DR, East Baton Rouge, LA
Built 1960 Load: 32.4 t ADT: 6,718
N Airway Dr
FairOver: JONES CREEK
BATON ROUGE AIRWAY DR., East Baton Rouge, LA
Built 1970 Load: 32.4 t ADT: 1,000
S. Choctaw Dr
FairOver: DRAINAGE BAYOU
S. CHOCTAW DR., East Baton Rouge, LA
Built 1982 Load: 32.4 t ADT: 18,778
Mohican-Prescott X
FairOver: HURRICANE CR.
0.8 M E OF LA 67, East Baton Rouge, LA
Built 1970 Load: 32.4 t ADT: 7,762
Prescott Rd
FairOver: DRAINAGE BAYOU
0.1 M E of US 61, East Baton Rouge, LA
Built 1969 Load: 32.4 t ADT: 5,400
Monticello Blvd
FairOver: Sharp Station Canal
0.2 M S of LA 37, East Baton Rouge, LA
Built 1970 Load: 32.4 t ADT: 4,262
LA0010
FairOver: STREAM NO NAME
1.1 MILES WEST OF JCT. LA, East Feliciana, LA
Built 2012 Load: 32.4 t ADT: 5,830
LA0067
FairOver: STREAM NO NAME
1.2 M N of LA 10&LA 67, East Feliciana, LA
Built 1955 Load: 32.4 t ADT: 2,805
LA0067
FairOver: WALNUT BRANCH
1.4 M N of LA 10&LA 67, East Feliciana, LA
Built 1955 Load: 32.4 t ADT: 2,805
LA0067
FairOver: PRETTY CREEK TRIB
3.1 M SW of LA 432&LA 67, East Feliciana, LA
Built 1955 Load: 32.4 t ADT: 2,805
LA0010
FairOver: CREEK
0.3 M E of LA 10&LA 421, East Feliciana, LA
Built 1959 Load: 32.4 t ADT: 3,675
LA0019
FairOver: NO NAME
0.4 M N of LA 10, East Feliciana, LA
Built 1951 Load: 32.4 t ADT: 3,546
LA0076
FairOver: W-8 MAIN CANAL
0.44 M NE of LA 76&LA 411, Iberville, LA
Built 1952 Load: 32.4 t ADT: 7,562
LA0076
FairOver: NO NAME
1.2 M NE of LA 76&LA 411, Iberville, LA
Built 1952 Load: 32.4 t ADT: 7,562
LA0030
FairOver: BAYOU MANCHAC
2.4 M S of LA 327&LA 30, Iberville, LA
Built 1967 Load: 32.4 t ADT: 17,089
LA0010
FairOver: RAILROAD
4.1 MILES EAST OF LA 1 AT, Pointe Coupee, LA
Built 2010 Load: 32.4 t ADT: 5,763
Showing 3,501-3,550 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.