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
KING ST
FairOver: DRAIN
0.08 MI N BUS 90, Calcasieu, LA
Built 1997 Load: 19.8 t ADT: 934
CLINE ST
FairOver: GUM SLOUGH
0.2 MI E of LA 14, Calcasieu, LA
Built 2002 Load: 19.8 t ADT: 433
EAST OPELOUSAS ST
FairOver: COMPANY CANAL
0.7 MI EAST OF LA 397, Calcasieu, LA
Built 1989 Load: 19.8 t ADT: 1,003
TOPSY RD
FairOver: LITTLE INDIAN BAYOU
0.1 MI EAST OF US 171, Calcasieu, LA
Built 1986 Load: 19.8 t ADT: 5,516
LA0395
FairOver: DRAIN
6.0 MI NORTH OF I-10, Jefferson Davis, LA
Built 1957 Load: 19.8 t ADT: 3,596
BEBEE ROAD
FairOver: ARCENEAUX BAYOU
1.6 MI N of LA101, Jefferson Davis, LA
Built 1971 Load: 19.8 t ADT: 80
FDR 155
FairOver: SADDLE CREEK
NO DATA ENTERED, Grant, LA
Built 1962 Load: 19.8 t ADT: 15
LA0483
FairOver: CREEK
5.03 MI. NORTH OF US 171, Sabine, LA
Built 1929 Load: 19.8 t ADT: 525
Coldwater
FairOver: WHITE OAK CREEK
APP. 6.1 MI. NW OF US 84, Winn, LA
Built 1970 Load: 19.8 t ADT: 288
Parker Lane
FairOver: ASH SLOUGH
0.34 mi. W of LA 15, Franklin, LA
Built 1997 Load: 19.8 t ADT: 210
LA0935
FairOver: Black Bayou
1.7 Mi. N. of LA 22, Ascension, LA
Built 1960 Load: 19.8 t ADT: 1,790
LA3045
FairOver: CAPITOL LAKE
1.3 M N of I-10&I-110, East Baton Rouge, LA
Built 1958 Load: 19.8 t ADT: 2,701
Parkforest Dr
FairOver: JACKS BAYOU
0.7 M N of LA 73, East Baton Rouge, LA
Built 1969 Load: 19.8 t ADT: 2,723
LA0986
FairOver: DRAINAGE CANAL
1.4 MILES EAST OF LA 415, West Baton Rouge, LA
Built 2013 Load: 19.8 t ADT: 1,204
LA0016
FairOver: DRAIN
1.0 M E OF LA 42, Livingston, LA
Built 1951 Load: 19.8 t ADT: 6,743
Hood Rd
FairOver: WEST COLYELL CREEK
0.90 M E of LA 447, Livingston, LA
Built 1984 Load: 19.8 t ADT: 300
3RD STREET
FairOver: CANAL
1.25 MI EAST OF US 190, St. Tammany, LA
Built 1989 Load: 19.8 t ADT: 600
FISCHER DRIVE
FairOver: GUM BAYOU
0.06 MI EAST OF LA 1090, St. Tammany, LA
Built 1976 Load: 19.8 t ADT: 1,000
LA1077
FairOver: SAVANNAH BRANCH
LA1077, St. Tammany, LA
Built 1957 Load: 19.8 t ADT: 883
US0190
FairOver: PONCHATOULA CR.
US0190, Tangipahoa, LA
Built 1932 Load: 19.8 t ADT: 7,716
LA0182
FairOver: 40 ARPENT CANAL
.01 MI WEST OF LA 652, Lafourche, LA
Built 1952 Load: 20.0 t ADT: 7,322
Sensat Cove Rd
FairOver: INTERSTATE 10
0.4 Mi S of LA 91, Acadia, LA
Built 1961 Load: 20.0 t ADT: 1,953
LA3070
FairOver: CREEK
5.22 MI NORTH OF LA 100, Acadia, LA
Built 1963 Load: 20.0 t ADT: 956
South College Rd.
FairOver: COULEE MINE
1.1 MI W OF W. PINHOOK RD, Lafayette, LA
Built 1967 Load: 20.0 t ADT: 21,734
LA0096
FairOver: BAYOU TECHE ST M.
0.13 MI EAST OF LA 31, St. Martin, LA
Built 1942 Load: 20.0 t ADT: 8,684
LA3069
FairOver: B TECHE FRANKLIN
0.25 Mi SW of LA 87, St. Mary, LA
Built 1963 Load: 20.0 t ADT: 1,210
LA0335
FairOver: CREEK
5.16 MI W. OF LA 3093, Vermilion, LA
Built 1953 Load: 20.0 t ADT: 284
LA3143
FairOver: WARREN CANAL
2.6 MI W. OF LA 91, Vermilion, LA
Built 1966 Load: 20.0 t ADT: 134
Gallet Rd
FairOver: TOUCHETS CANAL
0.3Mi W of LA 35, Vermilion, LA
Built 1977 Load: 20.0 t ADT: 100
US0171
FairOver: BRUSH BAYOU
1.7 MI. N. OF LA 3132, Caddo, LA
Built 1954 Load: 20.0 t ADT: 17,212
US0371
FairOver: BRUSHY CREEK
5.59MI NORTH OF US 80, Webster, LA
Built 1960 Load: 20.0 t ADT: 6,606
LA0004
FairOver: CREEK
.45 MI EAST OF LA 34, Jackson, LA
Built 1969 Load: 20.0 t ADT: 2,910
LA0563
FairOver: BIG CREEK
1.73 MI NORTH OF LA 544, Lincoln, LA
Built 1973 Load: 20.0 t ADT: 1,064
LA0563
FairOver: WALNUT CREEK
1.83 MI NORTH OF LA 544, Lincoln, LA
Built 1973 Load: 20.0 t ADT: 1,064
LA0822
FairOver: CREEK
3.59 MI EAST OF US 167, Lincoln, LA
Built 1953 Load: 20.0 t ADT: 1,568
CCC RD
FairOver: DUGDEMONA RIVER
5 MI S SIMSBORO, Lincoln, LA
Built 1979 Load: 20.0 t ADT: 20
CEDAR CREEK RD
FairOver: COLVIN CREEK
CEDAR CREEK RD/ RUSTON, Lincoln, LA
Built 1975 Load: 20.0 t ADT: 325
US0065
FairOver: WILLOW BAYOU REL. CANAL
3.01 MI NORTH OF US 80, Madison, LA
Built 1960 Load: 20.0 t ADT: 6,051
LA0015
FairOver: BAYOU
4.4 MI EAST OF LA 841, Ouachita, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: BLACK STEEP BAYOU
3.8 MI EAST OF LA 841, Ouachita, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: BAYOU
1.5 MI WEST OF LA 841, Ouachita, LA
Built 1951 Load: 20.0 t ADT: 5,994
LA0151
FairOver: CREEK
5.68 MI NORTH OF LA 546, Ouachita, LA
Built 1958 Load: 20.0 t ADT: 2,828
LA0151
FairOver: COCKEREL CREEK
1.1 MI NORTH OF NORTH INT, Ouachita, LA
Built 1967 Load: 20.0 t ADT: 2,862
LA0015
FairOver: BR. OVER DRAINAGE CANAL
2.1 MI WEST OF LA 133, Richland, LA
Built 1951 Load: 20.0 t ADT: 2,382
LA0015
FairOver: FLAT SLOUGH BRIDGE
12.0 MI NW FRANKLIN PAR, Richland, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: SLOUGH
4.2 MI WEST OF LA 133, Richland, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: B LAFOURCHE RELIEF
5.2 MI WEST OF LA 133, Richland, LA
Built 1954 Load: 20.0 t ADT: 2,382
LA0015
FairOver: ONEMILE CREEK
1.0 MI NORTH OF LA 33, Union, LA
Built 1953 Load: 20.0 t ADT: 8,290
US0190
FairOver: SLOUGH
7.49 MI. E OF INT LA 113, Allen, LA
Built 1954 Load: 20.0 t ADT: 3,923
US0190
FairOver: SLOUGH
7.78 MI. E OF INT LA 113, Allen, LA
Built 1954 Load: 20.0 t ADT: 3,923
Showing 1,001-1,050 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.