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
LA1226
PoorOver: BAYOU CHEVREUILLE
2.7 MI. N OF INT US71, Natchitoches, LA
Built 1967 Load: 7.5 t ADT: 41
Grand Rd
PoorOver: DRAINAGE CANAL
0.5 Mi. E. of LA 69, Iberville, LA
Built 1975 Load: 7.5 t ADT: 90
Leggit Crossing
PoorOver: BAYOU MACON
1.9 Mi. E. of LA 588, East Carroll, LA
Built 1960 Load: 7.8 t ADT: 200
Sparrow Lane
PoorOver: MARTEAU BAYOU
0.3 M. SE OF LA 492, Grant, LA
Built 1919 Load: 7.8 t ADT: 40
Bryn Mawr St
PoorOver: Hynson Bayou
0.32 MI. NW OF US 165B, Rapides, LA
Built 1951 Load: 7.8 t ADT: 1,500
Moses Ln
PoorOver: CHOCTAW BAYOU
1.3 MI. EAST OF LA 1, Avoyelles, LA
Built 1950 Load: 8.0 t ADT: 90
LAKESIDE LOOP
PoorOver: YOCUM CR
LAKESIDE LOOP, Sabine, LA
Built 1967 Load: 8.1 t ADT: 110
Veazie Rd
PoorOver: FISH BAYOU
1 Mi N. of La 10, St. Landry, LA
Built 1977 Load: 8.4 t ADT: 250
LOCUST HILL RD
PoorOver: TRIB TO BOGGY BAYOU
0.3 Mi. W. of US 79, Caddo, LA
Built 1984 Load: 8.4 t ADT: 78
LA0160
PoorOver: DORCHEAT B RELIEF
0.87 MI West OF LA 3008, Webster, LA
Built 1966 Load: 8.4 t ADT: 537
FDR 127
PoorOver: HURRICANE CREEK
NO DATA ENTERED, Grant, LA
Built 1975 Load: 8.4 t ADT: 30
Old Baker Rd.
PoorOver: DRAIN
LA 1209, East Baton Rouge, LA
Built 1963 Load: 8.4 t ADT: 2,717
Buck Horn Dr
PoorOver: DRAINAGE BAYOU
1.3 MILES EAST OF FRED, East Baton Rouge, LA
Built 1985 Load: 8.4 t ADT: 314
GRAND CAILLOU RD
PoorOver: PLATT BAYOU
0119 LOG MI FROM IN, Terrebonne, LA
Built 1978 Load: 8.7 t ADT: 128
Labit Rd
PoorOver: COULEE
0.3 MI North of LA 88, Iberia, LA
Built 1965 Load: 8.7 t ADT: 829
Switzerland Rd.
PoorOver: DARBY COULEE
0.37 Mi SW of LA 339, Lafayette, LA
Built 1985 Load: 8.7 t ADT: 16
LA3147
PoorOver: HUMBLE CANAL
5.5 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 8.7 t ADT: 221
LA0537
PoorOver: POSTEN BAYOU
6.30 MI NORTH OF LA 2, Bossier, LA
Built 1971 Load: 8.7 t ADT: 67
BOLLES RD.
PoorOver: GULLY
1.5 MI W of LA395, Jefferson Davis, LA
Built 1975 Load: 8.7 t ADT: 25
Larock Rd
PoorOver: NATALBANY CREEK
0.9 Mi W of US 51, Tangipahoa, LA
Built 1950 Load: 8.7 t ADT: 14
VASTAR ROAD
PoorOver: CENTRAL CANAL
VASTAR ROAD, Cameron, LA
Built 1983 Load: 9.1 t ADT: 10
Airport Rd
PoorOver: Coulee Triet
1.6 Mi. E. of La 1124, Acadia, LA
Built 1965 Load: 9.1 t ADT: 40
Garber Rd.
PoorOver: COULEE
1.17 MI NE of US 90, Lafayette, LA
Built 1977 Load: 9.1 t ADT: 1,660
Foster Arbor Rd
PoorOver: TOPY CREEK
3.3 MI. WEST OF LA 1, Bienville, LA
Built 1975 Load: 9.1 t ADT: 100
LA0160
PoorOver: DORCHEAT B RELIEF
2.9 MI EAST OF LA 3014, Webster, LA
Built 1966 Load: 9.1 t ADT: 537
Grisby Rd
PoorOver: TRIB TO FLAT LICK BAYOU
1.88 MI. E. OF LA. 1, Webster, LA
Built 1979 Load: 9.1 t ADT: 37
LAURELI RD
PoorOver: BRANCH OF CYPRESS CREEK
4 MILES SW LUNA, Ouachita, LA
Built 1980 Load: 9.1 t ADT: 16
AVERY RD
PoorOver: CYPRESS CREEK
3 MI W LUNA, Ouachita, LA
Built 1965 Load: 9.1 t ADT: 32
CHARLIE KUNTZ RD
PoorOver: KINDER DITCH
0.6 MI N OF LA 3086, Allen, LA
Built 1952 Load: 9.1 t ADT: 150
PARK RD
PoorOver: CREEK
0.1 MI. S OF LA 383, Allen, LA
Built 1965 Load: 9.1 t ADT: 480
LOFTIN RD
PoorOver: PALMETTO CREEK
0.2 MI. N OF SAND BED RD, Beauregard, LA
Built 1990 Load: 9.1 t ADT: 125
ABELL ROAD
PoorOver: DITCH
2.0 MI E of LA 101, Jefferson Davis, LA
Built 1978 Load: 9.1 t ADT: 50
JOSEPH STREET
PoorOver: CREEK
0.6 MI N of US 90, Jefferson Davis, LA
Built 1968 Load: 9.1 t ADT: 200
ROSTROM ROAD
PoorOver: DRAIN
3.6 MI S of LA 102, Jefferson Davis, LA
Built 1980 Load: 9.1 t ADT: 70
Selma Loop Rd
PoorOver: CREEK
0.41 M. S. OF PARISH ROAD, Grant, LA
Built 1970 Load: 9.1 t ADT: 130
Grand Staff Rd
PoorOver: CREEK
GRAND STAFF ROAD, Grant, LA
Built 1970 Load: 9.1 t ADT: 40
LA0485
PoorOver: LITTLE RIVER RELIEF
3.5 MI. NORTH OF LA 6, Natchitoches, LA
Built 1956 Load: 9.1 t ADT: 508
LA1232
PoorOver: KYIAIES CREEK
5.84 MI EAST OF LA 501, Winn, LA
Built 1960 Load: 9.1 t ADT: 178
Zeagler Rd
PoorOver: CREEK
0.7 miles S of LA 503, LaSalle, LA
Built 1990 Load: 9.1 t ADT: 145
Monte Sano Ave
PoorOver: DRAIN TO MONTE SANO BAYO
0.3 MI E OF I-110/US190EX, East Baton Rouge, LA
Built 1980 Load: 9.1 t ADT: 192
Dyer Rd
PoorOver: SOUTH BAYOU
3.5 MI.S.LA67 LA64 I, East Baton Rouge, LA
Built 1960 Load: 9.1 t ADT: 1,636
Port Hudson-Pride
PoorOver: INDIAN BAYOU
0.8 M E OF LA 19, East Baton Rouge, LA
Built 1965 Load: 9.1 t ADT: 2,562
LA0963
PoorOver: REDWOOD CREEK
0.9 MI WEST OF LA 19, East Feliciana, LA
Built 1958 Load: 9.1 t ADT: 905
Frank Ballard Rd
PoorOver: CAT BRANCH
0.7 MI NW OF LA 441 EXIT, Livingston, LA
Built 1982 Load: 9.1 t ADT: 150
US0090
PoorOver: EAST PEARL RIVER
US0090, St. Tammany, LA
Built 1934 Load: 9.1 t ADT: 1,215
Rosaryville Rd
PoorOver: CREEK
4.5 MI SW OF SR 22 E, Tangipahoa, LA
Built 1975 Load: 9.1 t ADT: 512
Beach Rd
PoorOver: CREEK
.9 MI SW OF JCT 445, Tangipahoa, LA
Built 1960 Load: 9.1 t ADT: 14
Cambell Rd
PoorOver: CREEK
1.4 MI NW OF LA 51 E, Tangipahoa, LA
Built 1975 Load: 9.1 t ADT: 269
Singing Waterfall
PoorOver: CREEK
3 MI NE OF JCT 1062, Tangipahoa, LA
Built 1960 Load: 9.1 t ADT: 64
M. Williams Rd
PoorOver: SPRING CREEK
1 MI SE OF JCT 38 &, Tangipahoa, LA
Built 1960 Load: 9.1 t ADT: 93
Showing 11,401-11,450 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.