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
GoodOver: BAYOU POYDRAS
0.17 M N of LA 3091, Pointe Coupee, LA
Built 1923 Load: 32.4 t ADT: 1,351
Jack Torres Rd
GoodOver: DRAINAGE DITCH
1.5 Mi NE of LA 411, Pointe Coupee, LA
Built 1989 Load: 32.4 t ADT: 657
US0190
GoodOver: US 190 OVER STUMPY BAYOU
2MI E OF P.C. PARISH LINE, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 19,077
LA0415
GoodOver: STREAM NO NAME
0.2 M N of LA 415@LA 413, West Baton Rouge, LA
Built 1926 Load: 32.4 t ADT: 21,189
LA0076
GoodOver: STREAM NO NAME
1.1 M W of LA 415@LA 76, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 7,562
LA0076
GoodOver: DRAIN
.01 Mi. W. of LA 415, West Baton Rouge, LA
Built 1990 Load: 32.4 t ADT: 7,562
I0010
GoodOver: DRAINAGE CANAL
1.74 M W of LA 415&I-10, West Baton Rouge, LA
Built 1968 Load: 32.4 t ADT: 80,618
Burnett Rd
GoodOver: GASPERS CREEK
0.35 MI W OF US 61, West Feliciana, LA
Built 2017 Load: 32.4 t ADT: 110
LA0010
GoodOver: HAMMER CREEK
7.25 Mi E of US 61, West Feliciana, LA
Built 1948 Load: 32.4 t ADT: 1,585
Travis Str
GoodOver: East Fork Dumplin Cr
0.3 Mi. E. of LA 447, Livingston, LA
Built 2020 Load: 32.4 t ADT: 812
John Barber Rd
GoodOver: Mars Branch
0.75 mi. south of LA 442, Livingston, LA
Built 2018 Load: 32.4 t ADT: 300
US0190
GoodOver: CREEK
1.3 M E OF LA 16, Livingston, LA
Built 1953 Load: 32.4 t ADT: 16,814
LA0042
GoodOver: DRAIN
0.2 M W OF LA 441, Livingston, LA
Built 1961 Load: 32.4 t ADT: 2,466
LA0016
GoodOver: CREEK
1.3 M N OF LA 1032, Livingston, LA
Built 1965 Load: 32.4 t ADT: 24,508
LA0016
GoodOver: BEAVER CREEK
LA 16 LOG MI 4.01, Livingston, LA
Built 1982 Load: 32.4 t ADT: 22,036
LA0016
GoodOver: DRAIN
2.3 M N OF LA 64, Livingston, LA
Built 1985 Load: 32.4 t ADT: 19,766
LA0442
GoodOver: DRAIN
2.4 M W OF LA 43, Livingston, LA
Built 1966 Load: 32.4 t ADT: 5,026
LA0441
GoodOver: BIG BRANCH
3.68 MILES N OF I-12, Livingston, LA
Built 1999 Load: 32.4 t ADT: 4,270
LA0441
GoodOver: CREEK
6.06 MI NORTH JCT LA 442, Livingston, LA
Built 2004 Load: 32.4 t ADT: 4,270
I0012
GoodOver: CREEK
0.1 M W OF LA 3002, Livingston, LA
Built 1970 Load: 32.4 t ADT: 77,469
I0012
GoodOver: I-12 ENT RAMP
0.1 M W OF LA 3002, Livingston, LA
Built 1970 Load: 32.4 t ADT: 31,285
I0012
GoodOver: I-12 EXIT RAMP
0.1 M W OF LA 3002, Livingston, LA
Built 1970 Load: 32.4 t ADT: 31,285
I0012
GoodOver: CANAL
1.0 M E OF LA 16, Livingston, LA
Built 1970 Load: 32.4 t ADT: 77,469
I0012
GoodOver: CANAL
0.2 M W OF LA 447, Livingston, LA
Built 1970 Load: 32.4 t ADT: 77,469
I0012
GoodOver: CANAL
0.5 M W OF LA 63, Livingston, LA
Built 1969 Load: 32.4 t ADT: 78,208
I0012
GoodOver: CREEK
1.0 M E OF LA 441, Livingston, LA
Built 1968 Load: 32.4 t ADT: 74,180
LA1036
GoodOver: CREEK
1.4 M S OF LA 442, Livingston, LA
Built 1968 Load: 32.4 t ADT: 426
Richardson Rd
GoodOver: RICHARDSON DRIVE BRIDGE
2 MILES W OF JCT 42 & 43, Livingston, LA
Built 1994 Load: 32.4 t ADT: 150
Pardue Rd
GoodOver: CREEK
0.15 M N of LA 42, Livingston, LA
Built 1990 Load: 32.4 t ADT: 300
McDaniel Rd
GoodOver: KILLIAN BRANCH CREEK
2.1 MILES WEST LA 16, St. Helena, LA
Built 2010 Load: 32.4 t ADT: 350
Shiloh Baptist Rd
GoodOver: CREEK
2.4 MILES NORTH OF LA 43, St. Helena, LA
Built 2009 Load: 32.4 t ADT: 75
LA1042
GoodOver: Ditch
5.4 Mi W of La 37, St. Helena, LA
Built 2020 Load: 32.4 t ADT: 1,316
LA0037
GoodOver: CANAL
1.0M NORTH OF LA 63 INT, St. Helena, LA
Built 1955 Load: 32.4 t ADT: 1,241
LA0037
GoodOver: CREEK
3.3 M NE OF LA 63, St. Helena, LA
Built 1955 Load: 32.4 t ADT: 631
LA0038
GoodOver: DRAIN
5.11 MI E JCT LA10 & LA38, St. Helena, LA
Built 2003 Load: 32.4 t ADT: 933
LA3188
GoodOver: DRAIN
1.45 MI. NO. U.S. 61, St. John the Baptist, LA
Built 1983 Load: 32.4 t ADT: 6,064
Grand Ave
GoodOver: CYPRESS BAYOU
1.65 MILES SOUTH OF US90, St. Tammany, LA
Built 2015 Load: 32.4 t ADT: 284
Browns Village Rd
GoodOver: BAYOU VINCENT
1.0 MILES WEST OF US 11, St. Tammany, LA
Built 2010 Load: 32.4 t ADT: 1,567
US0011
GoodOver: Schneider Canal
1.5 Mi. S. of LA 433, St. Tammany, LA
Built 2017 Load: 32.4 t ADT: 8,018
LA0435
GoodOver: DRAIN
4.87 MILES EAST OF LA 36, St. Tammany, LA
Built 2010 Load: 32.4 t ADT: 4,200
WEST 15TH STREET
GoodOver: RATTLESNAKE BRANCH
1.0 MILE W OF LA 21, St. Tammany, LA
Built 2017 Load: 32.4 t ADT: 122
LA0021
GoodOver: CREEK
5.6 M NE OF LA 36, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 7,775
LA0021
GoodOver: ABITA CREEK
3.7 M SW OF LA 41, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 7,775
LA0041
GoodOver: BRUSHY BRANCH
3.5 M N OF LA 435, St. Tammany, LA
Built 1972 Load: 32.4 t ADT: 4,243
LA0041
GoodOver: DRAIN
4.0 M N OF LA 435, St. Tammany, LA
Built 1972 Load: 32.4 t ADT: 4,243
LA0040
GoodOver: BIG FORK BRANCH
2.0 MI N.E. LA 1129 INTER, St. Tammany, LA
Built 1997 Load: 32.4 t ADT: 1,567
LA0040
GoodOver: DRAIN
4.5 MI N-E JCT LA 1129, St. Tammany, LA
Built 1997 Load: 32.4 t ADT: 1,567
LA0040
GoodOver: DRAIN
5.1 MI N-E JCT LA 1129, St. Tammany, LA
Built 1997 Load: 32.4 t ADT: 1,567
I0012
GoodOver: FOX BRANCH
I0012, St. Tammany, LA
Built 1974 Load: 32.4 t ADT: 53,386
I0012
GoodOver: BIG BRANCH
I0012, St. Tammany, LA
Built 1972 Load: 32.4 t ADT: 78,974
Showing 8,201-8,250 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.