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
LA0506
PoorOver: DRAIN
6.7 MI WEST OF US 165, Caldwell, LA
Built 1931 Load: 0.0 t ADT: 306
Bayou Boeuf Rd
PoorOver: DRAINAGE CANAL
0.5 Mi. N. of US 90, Assumption, LA
Built 1950 Load: 0.0 t ADT: 4
LA0409
PoorOver: LITTLE SANDY CREEK
1.6 Mi N of LA 64, East Baton Rouge, LA
Built 1955 Load: 0.0 t ADT: 3,092
LA0410
PoorOver: BLACKWATER BAYOU
1.6 M N of LA 408&LA 410, East Baton Rouge, LA
Built 1957 Load: 0.0 t ADT: 3,664
Midway Rd
PoorOver: BLACK CREEK
0.4 M E of LA 955, East Feliciana, LA
Built 1965 Load: 0.0 t ADT: 130
Singletary St
PoorOver: REDWOOD CREEK
270 Ft W of LA 19, East Feliciana, LA
Built 1999 Load: 0.0 t ADT: 118
Bennett Rd
PoorOver: HURRICANE CREEK
3.9 M W of LA 19, East Feliciana, LA
Built 1999 Load: 0.0 t ADT: 12
Par Rd 4-106
PoorOver: UNNAMED CREEK
0.80 MI E OF LA19, East Feliciana, LA
Built 1989 Load: 0.0 t ADT: 40
LA0075
PoorOver: BAYOU BREAUX
1.1 Mi N of La 141, Iberville, LA
Built 1973 Load: 0.0 t ADT: 2,943
LA0413
PoorOver: BAYOU DISCHARGE
2.1 Mi W of La 413, Pointe Coupee, LA
Built 1968 Load: 0.0 t ADT: 5,896
LA0020
PoorOver: BAYOU CHEVREVIL
1.2 Mi N of LA 307, St. James, LA
Built 1959 Load: 0.0 t ADT: 8,204
Conway Bayou
PoorOver: BARROW PIT
26 Ft E of US 61, St. James, LA
Built 1968 Load: 0.0 t ADT: 163
Jones Connell Rd
PoorOver: CREEK
3.8M NW OF LA 10 JCT 421, West Feliciana, LA
Built 1991 Load: 0.0 t ADT: 30
Plettenberg Rd.
PoorOver: POLLY CREEK
4.8 MI SW JCT LA 66 LA968, West Feliciana, LA
Built 1986 Load: 0.0 t ADT: 110
Highland Rd
PoorOver: MADDEN CREEK
2.7 MI W of LA 66, West Feliciana, LA
Built 1970 Load: 0.0 t ADT: 210
Sligo Rd
PoorOver: WALTER CREEK
3.9 M E OF LA 66, West Feliciana, LA
Built 1967 Load: 0.0 t ADT: 100
Sligo Rd
PoorOver: BIG BAYOU SARA
4.2 MI.SW.US61 STATE, West Feliciana, LA
Built 1960 Load: 0.0 t ADT: 80
Sligo Rd
PoorOver: GALES CREEK
3.2 MI.SW.US61 STATE, West Feliciana, LA
Built 1975 Load: 0.0 t ADT: 130
Lod Stafford Rd
PoorOver: COLYELL CREEK
3.06 MI EAST OF 1024, Livingston, LA
Built 1986 Load: 0.0 t ADT: 300
LA0016
PoorOver: DRAIN
2.5 M W OF LA 21, St. Tammany, LA
Built 1968 Load: 0.0 t ADT: 1,388
DIXIE RANCH RD.
PoorOver: I-12
4.2 M E OF LA 434, St. Tammany, LA
Built 1972 Load: 0.0 t ADT: 4,450
Hosmer Mill Rd
PoorOver: BR. OV BOGUE FALAYA RIVE
2 MI NE OF LA 437, St. Tammany, LA
Built 1980 Load: 0.0 t ADT: 839
Million Dollar Rd
PoorOver: BOGUE FALAYA RIVER
0.10 MI EAST OF LA 25, St. Tammany, LA
Built 1960 Load: 0.0 t ADT: 1,768
Layton Coco Xing
PoorOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1986 Load: 0.9 t ADT: 40
LA1077
PoorOver: BLACK BAYOU
1.1 M S OF LA 22, St. Tammany, LA
Built 1965 Load: 0.9 t ADT: 1,019
LA0308
PoorOver: BAYOU LAFOURCHE
.01 MI NORTH OF LA 1, Lafourche, LA
Built 1970 Load: 1.0 t ADT: 5,198
Ebeneezer Tap Rd
PoorOver: JONES CREEK
0.65 Mi South of LA 500, LaSalle, LA
Built 1989 Load: 1.2 t ADT: 300
Anderson Rd
PoorOver: HYDE BR.
2 MI S OF 1054 & 440, Tangipahoa, LA
Built 1960 Load: 1.2 t ADT: 25
Stubblefield Rd
PoorOver: BAYOU ROUGE
APPROX. 1 M. S. OF LA 361, Avoyelles, LA
Built 1975 Load: 2.3 t ADT: 40
Central St
PoorOver: HURRICANE CREEK
0.5 MI S OF US 165, Caldwell, LA
Built 1960 Load: 2.3 t
LA0010-S
PoorOver: ST JOSEPH BRANCH
1 mile east of LA 43, St. Helena, LA
Built 1959 Load: 2.3 t ADT: 225
GEORGE WAGONNER RD
PoorOver: MOODY CREEK
5 MI W LUNA, Ouachita, LA
Built 1960 Load: 2.7 t ADT: 15
LA0300
PoorOver: BAYOU LALOUTRE
8.70 MI FROM PARISH LINE, St. Bernard, LA
Built 1967 Load: 3.2 t ADT: 891
LA0134
PoorOver: JOES BAYOU
2.8 MI NE OF LA 577, East Carroll, LA
Built 1967 Load: 3.4 t ADT: 759
ARKADELPHIA RD
PoorOver: SIX MILE CREEK RELIEF
3.97 MI. N. OF LA 377, Allen, LA
Built 1977 Load: 3.4 t ADT: 260
Cutts Rd
PoorOver: HEMPHILL CREEK
1.25 MI. NW OF LA 121, Rapides, LA
Built 1983 Load: 3.4 t ADT: 275
LA0063
PoorOver: MCQUINNEY BAYOU
1.7 miles N of La 959, East Feliciana, LA
Built 1957 Load: 3.4 t ADT: 1,584
Mitch Rd
PoorOver: PETERS CREEK
1.1 MI. W OF HWY. 21, Washington, LA
Built 1970 Load: 3.4 t ADT: 1,420
Aristide Rd
PoorOver: COULEE
0.20 Mi W of LA 331, Vermilion, LA
Built 1978 Load: 3.6 t ADT: 300
MINERAL SPRINGS RD
PoorOver: CLARK CREEK
3 MI N CADEVILLE, Ouachita, LA
Built 1960 Load: 3.6 t ADT: 271
Point ala Hache Fe
PoorOver: MISS. RIVER FERRY RAMP
0.15 EAST OF LA 23, Plaquemines, LA
Built 1960 Load: 4.2 t ADT: 50
LA0085
PoorOver: PATOUT CANAL
2.0 MI EAST OF LA 83, Iberia, LA
Built 1945 Load: 4.5 t ADT: 3,125
LA0700
PoorOver: BAYOU GRAND MARAIS
1.33 MI N. OF LA 699, Vermilion, LA
Built 1952 Load: 4.5 t ADT: 1,900
Elston Rd
PoorOver: Red Chute Bayou
0.5 MI N OF LA 154, Bossier, LA
Built 1989 Load: 4.5 t ADT: 20
Horseshoe Bridge
PoorOver: BOAT CHANNEL/BISTINEAU
0.4M SOUTH OF LA 164, Webster, LA
Built 1991 Load: 4.5 t ADT: 23
Legion St
PoorOver: LITTLE CROOKED CREEK
0.08M EAST OF LA 803-1, Webster, LA
Built 1990 Load: 4.5 t ADT: 1,250
LA0580
PoorOver: TENSAS BAYOU
2.0 MI EAST OF LA 877, East Carroll, LA
Built 1958 Load: 4.5 t ADT: 268
LA0004
PoorOver: CREEK
4.16 MI EAST OF LA 34, Jackson, LA
Built 1952 Load: 4.5 t ADT: 897
KEPPLER CR RD
PoorOver: SUGAR CREEK
2.3 MI. N. INT. 338, Jackson, LA
Built 1976 Load: 4.5 t ADT: 75
LA0577
PoorOver: SUTT BAYOU
1.8 MI SOUTH OF I-20, Madison, LA
Built 1958 Load: 4.5 t ADT: 184
Showing 11,301-11,350 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.