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
LA0035
GoodOver: SLEDGE CANAL
0.6 MI S. OF LA 14, Vermilion, LA
Built 2014 Load: 46.3 t ADT: 3,591
LA0035
GoodOver: CREEK
0.4 Miles West of LA 692, Vermilion, LA
Built 2014 Load: 46.3 t ADT: 1,965
LA0082
GoodOver: DRAIN
0.3 MI. N. OF LA 333, Vermilion, LA
Built 2018 Load: 46.3 t ADT: 2,899
LA0332
GoodOver: Gueydan Canal
1.76 MI W. OF LA 91, Vermilion, LA
Built 2015 Load: 46.3 t ADT: 288
LA0089
GoodOver: CREEK
1.2 MI N. OF LA 682, Vermilion, LA
Built 2015 Load: 46.3 t ADT: 4,714
LA0335
GoodOver: CREEK
2 MI W OF LA 35, Vermilion, LA
Built 2018 Load: 46.3 t ADT: 284
LA0335
GoodOver: IL Melrose Canal
7 Mi East of La 3093, Vermilion, LA
Built 2019 Load: 46.3 t ADT: 284
LA0516
GoodOver: BLACK LAKE BAYOU RELIEF
4.8 MI. E. OF LA 792, Bienville, LA
Built 2016 Load: 46.3 t ADT: 177
LA0516
GoodOver: BLACK LAKE BAYOU
4.5 MI. E. OF LA 792, Bienville, LA
Built 2016 Load: 46.3 t ADT: 177
LA0516
GoodOver: MADDEN MILL CREEK
2.41 MI. E. OF LA 792, Bienville, LA
Built 2017 Load: 46.3 t ADT: 177
LA0612
GoodOver: OLD CHANNEL OF RED CHUTE
2.34 MI. E. OF US 71, Bossier, LA
Built 2017 Load: 46.3 t ADT: 8,332
US0080
GoodOver: FIFI BAYOU
3.4 MI E OF I- 220, Bossier, LA
Built 2021 Load: 46.3 t ADT: 15,627
US0080
GoodOver: FIFI BAYOU
4.2 MI W OF LA 614, Bossier, LA
Built 2021 Load: 46.3 t ADT: 2,376
LINTON ROAD
GoodOver: BLACK BAYOU RESERVOIR
1.6 MI E OF PALMETTO ROAD, Bossier, LA
Built 2022 Load: 46.3 t ADT: 4,650
Buncombe Rd
GoodOver: BOGGY BAYOU TRIB
1.7 MMI. E. OF LA 169 ON, Caddo, LA
Built 2015 Load: 46.3 t ADT: 100
Fairfield Ave
GoodOver: I-20
.01 MI N OF Southern Ave, Caddo, LA
Built 1994 Load: 46.3 t ADT: 54,700
Flat Lick
GoodOver: FLAT LICK BAYOU
4.94 MI. S. OF LA ON FLAT, Claiborne, LA
Built 2016 Load: 46.3 t ADT: 50
LA0155
GoodOver: BLACK LAKE BAYOU RELIEF
11.4 MI E. OF US 71, Red River, LA
Built 2015 Load: 46.3 t ADT: 618
LA0002
GoodOver: INDIAN CREEK
5.03 MI NORTH OF LA 160, Webster, LA
Built 2015 Load: 46.3 t ADT: 1,492
LA0159
GoodOver: THORNY BRANCH
0.41 MI S OF LA 159, Webster, LA
Built 2016 Load: 46.3 t ADT: 1,492
SMITHVILLE RD
GoodOver: BRALY CREEK
1.6 MI. S. OF LA 157, Webster, LA
Built 2016 Load: 46.3 t ADT: 170
US0065
GoodOver: BAXTER BAYOU
3.1 MI NORTH OF LA 134, East Carroll, LA
Built 2003 Load: 46.3 t ADT: 4,507
LA0146
GoodOver: Cypress Creek
2.1 Mi. E. of LA 822, Lincoln, LA
Built 2020 Load: 46.3 t ADT: 2,775
LA 835
GoodOver: Creek
4.41 Mi. East of US 165, Morehouse, LA
Built 2023 Load: 46.3 t ADT: 575
Bud Rd
GoodOver: Bonne Idee Bayou
01.70 Mi. SE of la 599, Morehouse, LA
Built 2019 Load: 46.3 t ADT: 75
Mott Lane
GoodOver: Drain to Irwin Lake
2.2 mi. W. of LA 133, Morehouse, LA
Built 2018 Load: 46.3 t ADT: 75
LA 835
GoodOver: Creek
4.74 Mi. East of US 165, Morehouse, LA
Built 2023 Load: 46.3 t ADT: 575
HILL ROAD
GoodOver: LITTLE FORK
1.6 MI. WEST OF US 425, Richland, LA
Built 2018 Load: 46.3 t ADT: 33
MONROE RD
GoodOver: LITTLE CREEK
0.7 MI N of LA 854, Richland, LA
Built 2009 Load: 46.3 t ADT: 175
GUNTER LOOP
GoodOver: DRAIN
0.90 MI. N. OF LA 2, West Carroll, LA
Built 2019 Load: 46.3 t ADT: 75
Mitchner Rd
GoodOver: Little Creek
1.7 Mi. W. of LA 17, West Carroll, LA
Built 2019 Load: 46.3 t ADT: 300
Roundhill Rd
GoodOver: DRAIN TO COLEWA BAYOU
3.1 MILES EAST OF LA 585, West Carroll, LA
Built 2014 Load: 46.3 t ADT: 704
JOE SPEARS RD
GoodOver: BAYOU
0.6 MI E of LA 397, Calcasieu, LA
Built 2019 Load: 46.3 t ADT: 307
JOHNNY BREAU RD
GoodOver: GOBBLER CREEK
1.2 MI W OF LA 108, Calcasieu, LA
Built 2019 Load: 46.3 t ADT: 46
MARCANTEL ROAD
GoodOver: BUXTON CREEK
0.3 MI N of ROUTE 66 ROAD, Calcasieu, LA
Built 2019 Load: 46.3 t ADT: 216
HOUSTON RIVER RD
GoodOver: Coon Gully
0.70 Mi W of LA 27, Calcasieu, LA
Built 2017 Load: 46.3 t ADT: 3,393
OLD HWY 90
GoodOver: WEBB GULLY
0.9 MI S of BROUSSARD RD, Calcasieu, LA
Built 2018 Load: 46.3 t ADT: 315
PARISH BARN RD
GoodOver: GULLY
0.02 MI N OF I-10 FRNTG, Calcasieu, LA
Built 2019 Load: 46.3 t ADT: 250
LA0109
GoodOver: GUM SLOUGH
2.7 MI N OF LA 3063, Calcasieu, LA
Built 1996 Load: 46.3 t ADT: 1,749
US0165
GoodOver: BAYOU
1.4 MI N OF LA 102, Jefferson Davis, LA
Built 2017 Load: 46.3 t ADT: 11,886
US0165
GoodOver: BAYOU SERPENT RELIEF
1.9 MI N OF LA 102, Jefferson Davis, LA
Built 2017 Load: 46.3 t ADT: 11,886
US0090
GoodOver: BAYOU
3.3 MI E OF LA 395, Jefferson Davis, LA
Built 2022 Load: 46.3 t ADT: 4,262
CARL HUNT RD
GoodOver: Bayou Beouf
0.25 M E of LA 1176, Avoyelles, LA
Built 2021 Load: 46.3 t ADT: 50
LA0471
GoodOver: Dartigo Creek
5.8 Mi N of US 71, Grant, LA
Built 2021 Load: 46.3 t ADT: 510
LA0471
GoodOver: Dartigo Creek
5.88 M N of US 71, Grant, LA
Built 2021 Load: 46.3 t ADT: 510
LA0471
GoodOver: Creek
6.02 M N of US 71, Grant, LA
Built 2021 Load: 46.3 t ADT: 510
US0165
GoodOver: OLD SLOUGH
0.63 MILES NORTH OF LA 8, Grant, LA
Built 2006 Load: 46.3 t ADT: 6,586
LA0496
GoodOver: BAYOU RAPIDES
1.95 MI. EAST OF LA 121, Rapides, LA
Built 2002 Load: 46.3 t ADT: 2,207
I0049
GoodOver: RAMPS US 71 DITCH RR
SOUTH I-49 / US 71 INTG., Rapides, LA
Built 1992 Load: 46.3 t ADT: 15,642
US0171
GoodOver: CHOCTAW CREEK
1.1 MI. NORTH OF LA 174, Sabine, LA
Built 2006 Load: 46.3 t ADT: 5,228
Showing 10,701-10,750 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.