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
Lemon B Rd
PoorOver: DRAINAGE BAYOU
2 MI. S. of LA 412, East Baton Rouge, LA
Built 1980 Load: 11.8 t ADT: 105
Par Rd 4-100
PoorOver: PALMERS BRANCH
0.7 MI. N CLINT-WILSON RD, East Feliciana, LA
Built 1958 Load: 11.8 t ADT: 362
LA0040
PoorOver: BULL BRANCH
3.3 M E OF LA 445, Tangipahoa, LA
Built 1957 Load: 11.8 t ADT: 2,778
Hinson Rd
PoorOver: CANAL
1.5 M E/SE OF I-12&LA 124, Tangipahoa, LA
Built 1975 Load: 11.8 t ADT: 4
Nuccio Rd
PoorOver: YELLOW WATER RIVER
0.5 NW OF JCT LA442& US51, Tangipahoa, LA
Built 1975 Load: 11.8 t ADT: 1,035
LA0308
PoorOver: SCULLY CANAL
.6 MI SOUTH OF LA 308 SPU, Lafourche, LA
Built 1954 Load: 12.0 t ADT: 5,198
LA0631
PoorOver: DRAIN CANAL
.6 MI EAST OF LA 306, St. Charles, LA
Built 1962 Load: 12.0 t ADT: 1,544
LA0091
PoorOver: B. PLAQ. BRULE/ESTHERWOO
1.2 MI N of US 90, Acadia, LA
Built 1975 Load: 12.0 t ADT: 1,617
LA0324
PoorOver: BAYOU TECHE
0.1 MI WEST OF LA 326, St. Mary, LA
Built 1941 Load: 12.0 t ADT: 883
HARRIS RD
PoorOver: I-20
1.6 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 12.0 t ADT: 3,620
US0080
PoorOver: BAYOU MACON
.7 MI EAST OF LA 17, Madison, LA
Built 1955 Load: 12.0 t ADT: 1,451
LA0082
PoorOver: MERMENTAU R./G.CHENIER
8.25 MI. S OF INT LA1143, Cameron, LA
Built 1959 Load: 12.0 t ADT: 2,899
LA0082
PoorOver: SUPERIOR CANAL
27.0 MI E OF LA 27, Cameron, LA
Built 1956 Load: 12.0 t ADT: 2,899
LA0472
PoorOver: INDIAN CREEK
5.02 MI EAST OF US 167, Grant, LA
Built 1938 Load: 12.0 t ADT: 88
KITES LANDING RD
PoorOver: WILSON BRANCH
KITES LANDING ROAD, Sabine, LA
Built 1967 Load: 12.0 t ADT: 110
Goodwood Blvd
PoorOver: JONES CREEK
1.5 MI E OF US 61, East Baton Rouge, LA
Built 1960 Load: 12.0 t ADT: 10,543
LA0037
PoorOver: GLASS BRANCH
1.6 M SW OF LA 10, St. Helena, LA
Built 1958 Load: 12.0 t ADT: 1,781
US0090
PoorOver: CHEF MENTEUR PASS
3.7 MI EAST OF US 11, Orleans, LA
Built 1930 Load: 12.3 t ADT: 1,215
LA0182
PoorOver: SANDAGER CANAL
2.5 MI SE OF LA 320, Iberia, LA
Built 1930 Load: 12.3 t ADT: 6,242
LA0162
PoorOver: BLACK BAYOU
00.76 MI EAST OF LA 3, Bossier, LA
Built 1967 Load: 12.3 t ADT: 4,595
HALES RD
PoorOver: HURRICANE CREEK
LOGMI 0.54 FR 0DE TO, Richland, LA
Built 1966 Load: 12.3 t ADT: 230
POPLAR ST
PoorOver: MILL CREEK
0.2 MI SOUTH OF LA 1156, Allen, LA
Built 1965 Load: 12.3 t ADT: 750
LA0109
PoorOver: GULLY
0.1 MI S OF LA 12, Calcasieu, LA
Built 1957 Load: 12.3 t ADT: 1,749
FREELAND RD
PoorOver: DRAIN
0.4 MI S of LA 102, Jefferson Davis, LA
Built 1979 Load: 12.3 t ADT: 30
LA0120
PoorOver: BAYOU SCIE RELIEF 3
3.64 MI EAST OF US 171, Sabine, LA
Built 1960 Load: 12.3 t ADT: 235
LA0308
PoorOver: HALWAY CANAL
4.3 M N of LA 70, Assumption, LA
Built 1969 Load: 12.3 t ADT: 1,825
Hunt Rd
PoorOver: DRAINAGE BAYOU
0.4 Mi N of Milldale Rd, East Baton Rouge, LA
Built 1965 Load: 12.3 t ADT: 220
LA0010
PoorOver: BAYOU MORRIS
0.9 M E of LA 417&LA 10, Pointe Coupee, LA
Built 1923 Load: 12.3 t ADT: 15
LA0421
PoorOver: THOM CREEK
0.8 M E of LA 957&LA 421, West Feliciana, LA
Built 1968 Load: 12.3 t ADT: 739
LA0118
PoorOver: CREEK
3.7 MILES WEST OF LA 117, Natchitoches, LA
Built 1976 Load: 12.4 t ADT: 1,471
LA0121
PoorOver: CREEK
0.28 MI. SW. OF LA 461, Rapides, LA
Built 1973 Load: 12.4 t ADT: 1,932
BOUNDARY RD
PoorOver: SIX MILE CREEK
0.75 MILES EAST OF LA 399, Vernon, LA
Built 1950 Load: 12.4 t ADT: 240
Piney Woods Rd
PoorOver: SIX MILE CREEK
4.7 MI W OF LA 9, Bienville, LA
Built 1977 Load: 12.5 t ADT: 30
H H Wilson Rd
PoorOver: DRAINAGE BAYOU
1.2 M NW OF PORT VINCENT, Ascension, LA
Built 1989 Load: 12.5 t ADT: 10
LA0038
PoorOver: PETERS CREEK
1.0 M E OF LA 441, St. Helena, LA
Built 1952 Load: 12.5 t ADT: 1,535
McLIN Rd
PoorOver: DUTCHMAN CREEK
1.4MI FROM LA 449, St. Helena, LA
Built 1964 Load: 12.5 t ADT: 70
Jarrell town Rd
PoorOver: MUSTER GROUND CREEK
1.6 MI. S. OF HWY. 4, Washington, LA
Built 1960 Load: 12.5 t ADT: 473
LA0056
PoorOver: BOUDREAUX CANAL
7.2 MI SOUTH OF LA 58, Terrebonne, LA
Built 1959 Load: 12.6 t ADT: 3,872
Boon Lasseigne Rd
PoorOver: Martin Bayou
2.2 Mi. E of La 347, St. Martin, LA
Built 1972 Load: 12.6 t ADT: 63
LA0082
PoorOver: MIDDLE CANAL
11.31 Mi S of LA 3147, Vermilion, LA
Built 1958 Load: 12.6 t ADT: 2,899
Big 4 Rd
PoorOver: COULEE
0.5 Mi S of La 14, Vermilion, LA
Built 1996 Load: 12.6 t ADT: 70
LA0173
PoorOver: MAHLIN BAYOU
.48 MI EAST OF LA 1, Caddo, LA
Built 1965 Load: 12.6 t ADT: 713
LA3008
PoorOver: HOLDER CREEK
5.4 MI SOUTH OF LA 160, Webster, LA
Built 1972 Load: 12.6 t ADT: 145
US0080
PoorOver: ICG RAILROAD
5.42 MI WEST OF LA 507, Lincoln, LA
Built 1949 Load: 12.6 t ADT: 2,378
US0080
PoorOver: CREEK
3.1 MI EAST OF LA 33, Lincoln, LA
Built 1952 Load: 12.6 t ADT: 3,395
ARDOIN COVE ROAD
PoorOver: CREEK
1.2 MI E of LA 101, Jefferson Davis, LA
Built 1968 Load: 12.6 t ADT: 70
SOUTH ST.
PoorOver: WELCH DRAINAGE CANAL
0.35 M EAST OF LA 99, Jefferson Davis, LA
Built 1983 Load: 12.6 t ADT: 500
AARON ROAD
PoorOver: CHENE BAYOU
2.5 MI W. OF LA 26, Jefferson Davis, LA
Built 1979 Load: 12.6 t ADT: 30
Big Creek Rd
PoorOver: BIG CREEK
LOGMI 1.50 FR 325 TO, Franklin, LA
Built 1976 Load: 12.6 t ADT: 77
E Flanacher Rd
PoorOver: DRAINAGE BAYOU
3.7 MI.NW.LA64 LA19, East Baton Rouge, LA
Built 1968 Load: 12.6 t ADT: 933
Showing 11,601-11,650 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.