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
I0012
GoodOver: DUMPLIN CREEK
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 37,161
I0012
GoodOver: MIDDLE COLYELL CREEK
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 37,161
I0012
GoodOver: HORNSBY CREEK
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 37,161
I0012
GoodOver: BIG BRANCH
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 44,252
I0012
GoodOver: BLOOD RIVER
I0012, Livingston, LA
Built 1968 Load: 44.5 t ADT: 44,252
US0190
GoodOver: TANGIPAHOA RIVER
1.12 MI. WEST OF LA 445, Tangipahoa, LA
Built 1969 Load: 44.5 t ADT: 9,053
I0055
GoodOver: I-55 OVER LA 16
I0055, Tangipahoa, LA
Built 1970 Load: 44.5 t ADT: 21,736
I0012
GoodOver: YELLOW WATER RIVER REL.
I0012, Tangipahoa, LA
Built 1970 Load: 44.5 t ADT: 58,377
Melvin Dupris Rd
GoodOver: I-10
0.28 Mi W OF LA 347, St. Martin, LA
Built 2022 Load: 44.7 t ADT: 1,329
LA0157
GoodOver: MARTIN CREEK
5.9 MI WEST OF US 371, Bossier, LA
Built 2013 Load: 44.7 t ADT: 1,325
LA0834
GoodOver: OVERFLOW CREEK
4.6 MI W OF US 167, Morehouse, LA
Built 2018 Load: 44.7 t ADT: 61
US 80
GoodOver: I-20
1.69 Mi. E. of LA 151, Ouachita, LA
Built 2021 Load: 44.7 t ADT: 3,275
WEST LINCOLN ROAD
GoodOver: CREEK
1.7 MI W OF LA 385, Calcasieu, LA
Built 2020 Load: 44.7 t ADT: 2,155
LA0500
GoodOver: KENNY CREEK
0.76 MI. EAST OF US 167, Winn, LA
Built 1998 Load: 44.7 t ADT: 220
CLOVERLAND AVE.
GoodOver: DRAINAGE CANAL
0.2 M W OF US 61, East Baton Rouge, LA
Built 2019 Load: 44.7 t ADT: 2,250
Albert Dr
GoodOver: Drainage Bayou
.2 miles E. of Woodale Bl, East Baton Rouge, LA
Built 2017 Load: 44.7 t ADT: 598
E Flanacher Rd
GoodOver: DRAINAGE BAYOU
2.7 MI.E OF LA 61, East Baton Rouge, LA
Built 2017 Load: 44.7 t ADT: 994
US0190
GoodOver: BAYOU
.50 OF A MILE EAST OF LA, St. Tammany, LA
Built 2013 Load: 44.7 t ADT: 12,700
US0190
GoodOver: BAYOU CHINCHUBA
.50 OF A MILE EAST OF LA, St. Tammany, LA
Built 2014 Load: 44.7 t ADT: 3,755
LA0045
GoodOver: GOOSE BAYOU
3.4 MI S OF LA 302, Jefferson, LA
Built 2019 Load: 45.0 t ADT: 6,709
US0090-X
GoodOver: ON RAMP (RAMP 7)
0.8 MI W OF LA 18, Jefferson, LA
Built 2017 Load: 45.0 t ADT: 15,955
E Stephenville Rd
GoodOver: COULEE
2.4 Mi NE of La 70, St. Martin, LA
Built 1986 Load: 45.0 t ADT: 422
LADY OF LAKE RD
GoodOver: CYPRESS ISLAND COULEE
1.6 Mi. W of La 31, St. Martin, LA
Built 1985 Load: 45.0 t ADT: 1,029
I0049
GoodOver: TWELVE MILE BAYOU
2.11 MI NORTH OF LA 1, Caddo, LA
Built 2013 Load: 45.0 t ADT: 42,454
I0049
GoodOver: TWELVE MILE BAYOU
2.11 MI N OF LA 1, Caddo, LA
Built 2013 Load: 45.0 t ADT: 6,846
McManus Road
GoodOver: Cypress Creek
1.6 MI. S OF LA 183, Richland, LA
Built 2023 Load: 45.0 t ADT: 275
DESHOTEL RD
GoodOver: CASTOR CREEK
1.1 MI E of Carrier Rd, Allen, LA
Built 2006 Load: 45.0 t ADT: 40
LA0378-S
GoodOver: INDIAN BAYOU
0.2 MI N OF LA 378, Calcasieu, LA
Built 2019 Load: 45.0 t ADT: 4,182
Bellwood Church Rd
GoodOver: DRY CREEK
0.5 MILES WEST OF LA 117, Natchitoches, LA
Built 2007 Load: 45.0 t ADT: 100
Weaver Cemetary Rd
GoodOver: DEMERY CREEK
3.2 M. W. OF LA 9 NEAR CH, Natchitoches, LA
Built 2004 Load: 45.0 t ADT: 102
Red Nelson Rd
GoodOver: MCGEE BRANCH
0.2 M. E. OF LA 155, Natchitoches, LA
Built 2005 Load: 45.0 t ADT: 152
PIONEER RD
GoodOver: EDMONDSON CREEK
1.2 MI S OF LA 6, Sabine, LA
Built 2016 Load: 45.0 t ADT: 100
SHUTEYE RD
GoodOver: MILLER CREEK
0.3 MI. W OF MT. OLIVE RD, Sabine, LA
Built 2013 Load: 45.0 t ADT: 110
PLAINVIEW RD
GoodOver: GOODSON CREEK
4.54 MI. EAST OF US 171, Sabine, LA
Built 2002 Load: 45.0 t ADT: 320
WELDON RD
GoodOver: TORO CREEK
3.5 MI EAST OF FISHER, Sabine, LA
Built 2006 Load: 45.0 t ADT: 30
SECTION LINE RD
GoodOver: CASTOR BAYOU
0.8 MI E OF LA 1211, Vernon, LA
Built 2021 Load: 45.0 t ADT: 1,350
BOUNDARY RD
GoodOver: LITTLE BRUSHY CREEK
3.0 MI. EAST OF LA 399, Vernon, LA
Built 2013 Load: 45.0 t ADT: 75
US0167
GoodOver: CREOSOTE BRANCH
8.99 MI. NORTH OF LA 500, Winn, LA
Built 2006 Load: 45.0 t ADT: 15,576
PECUE LANE
GoodOver: I-10
1.0 MI SW OF US 61, East Baton Rouge, LA
Built 2021 Load: 45.0 t ADT: 41,300
Milldale Rd
GoodOver: BEAVER CREEK
4.5 MI. W OF LA 409, East Baton Rouge, LA
Built 2017 Load: 45.0 t ADT: 1,512
Port Hudson-Pride
GoodOver: Little Sandy Creek
1.0 miles east of LA 958, East Baton Rouge, LA
Built 2017 Load: 45.0 t ADT: 540
I-10
GoodOver: LA 42 highland Rd
6.1 Mi N of LA 73, East Baton Rouge, LA
Built 2019 Load: 45.0 t ADT: 137,847
MIMMS RD
GoodOver: LEVEE BORROW PIT
0.1 OF A MILE WEST OF RAM, Iberville, LA
Built 2014 Load: 45.0 t ADT: 550
HWY 41 Spur
GoodOver: Gum Creek
1.06 Mi. E. of LA 41, St. Tammany, LA
Built 2021 Load: 45.0 t ADT: 1,325
Bankston Rd
GoodOver: LITTLE NATALBANY BRIDGE
2MI S/W OF LA 16 & US51, Tangipahoa, LA
Built 1999 Load: 45.0 t ADT: 551
MAGAZINE ROAD
GoodOver: BAYOU BARRIERE
BACK GATE, Plaquemines, LA
Built 1974 Load: 45.4 t ADT: 1,000
I0010
GoodOver: TRANSCONTINENTAL BLVD.
3.0 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 45.4 t ADT: 41,695
I-10
GoodOver: Drain Canal
3.5 Mi. East of I-510, Orleans, LA
Built 2022 Load: 45.4 t ADT: 77,962
I-10
GoodOver: Dranage Canal
5.2 Mi. East of I-510, Orleans, LA
Built 2022 Load: 45.4 t ADT: 77,962
US0090-B
GoodOver: GROUND
0.2 MI W OF LOYOLA AVE, Orleans, LA
Built 1960 Load: 45.4 t ADT: 7,620
Showing 10,551-10,600 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.