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
US0090
FairOver: GUM GULLY
1.0 MI E of LA 109, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 3,645
US0090
FairOver: DRAIN
2.9 MI E OF LA 3063, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 2,509
US0090
FairOver: BAYOU
4.6 MI EAST OF LA 3063, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 2,509
US0090
FairOver: DRAIN
0.6 MI EAST OF LA 27, Calcasieu, LA
Built 1955 Load: 32.4 t ADT: 13,695
US0090
FairOver: MAPLE FORK
1.8 MI EAST OF LA 27, Calcasieu, LA
Built 1932 Load: 32.4 t ADT: 13,695
US0090
FairOver: DRAIN
1.9 MI E. of LA 108, Calcasieu, LA
Built 1983 Load: 32.4 t ADT: 13,695
US0090
FairOver: BAYOU OSIER
0.9 MI W OF I-210, Calcasieu, LA
Built 1958 Load: 32.4 t ADT: 6,080
US0090
FairOver: DRAIN
1.8 MI EAST OF I-210, Calcasieu, LA
Built 1958 Load: 32.4 t ADT: 6,080
LA0012
FairOver: CANAL
3.2 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,573
LA0012
FairOver: CANAL
5.3 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 3,097
LA0012
FairOver: CANAL
7.8 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,155
LA0012
FairOver: CANAL
9.4 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 3,097
LA0012
FairOver: CANAL
10.0 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,155
LA0027
FairOver: DRAIN
4.4 MI S OF LA 1133, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 6,981
RUTH ST
FairOver: DINDE BAYOU
1.0 MI N of I-10, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 19,402
LA0389
FairOver: DRAIN
2.2 MI N OF LA 12, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 1,841
LA0389
FairOver: DRAIN
0.9 MI N OF LA 12, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 1,304
LA0108
FairOver: SPRING GULLY
4.6 MI W OF LA 27, Calcasieu, LA
Built 1962 Load: 32.4 t ADT: 1,553
LA0027
FairOver: DRAIN
3.3 MI N of LA 384, Calcasieu, LA
Built 1957 Load: 32.4 t ADT: 1,482
LA0014
FairOver: GOVERNMENT DITCH
0.4 MI N of LA 27, Calcasieu, LA
Built 1957 Load: 32.4 t ADT: 922
LA0385
FairOver: HIPPOLYTE COULEE
3.8 MI N OF LA 401, Calcasieu, LA
Built 1955 Load: 32.4 t ADT: 3,197
LA0385
FairOver: BAYOU
2.1 MI. N OF LA 3092, Calcasieu, LA
Built 1973 Load: 32.4 t ADT: 10,434
LA0385
FairOver: CONTRABAND BAYOU
0.1 MI NORTH OF LA 384, Calcasieu, LA
Built 1935 Load: 32.4 t ADT: 16,472
LA0014
FairOver: DITCH
2.5 MI EAST OF LA 27, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 2,023
LA0014
FairOver: B C DRAIN CANAL
5.8 MI EAST OF LA 27, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 2,023
I0210
FairOver: DRAIN
4.2 MI SOUTH OF I-10, Calcasieu, LA
Built 1964 Load: 32.4 t ADT: 57,504
I0010
FairOver: SABINE CANAL
3.3 MI EAST OF LA 108, Calcasieu, LA
Built 1966 Load: 32.4 t ADT: 86,969
I0010
FairOver: RICE CANAL
6.6 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 86,969
I0010
FairOver: DRAIN
6.6 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 3,799
I0010
FairOver: DRAIN
11.0 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 86,969
I0010
FairOver: DRAIN
11.0 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 11,437
I0010
FairOver: VERDINE BAYOU
1.8 MI E OF I-210, Calcasieu, LA
Built 1960 Load: 32.4 t ADT: 2,578
LA0378
FairOver: BAYOU MARINA
1.4 MI NORTH OF LA 379, Calcasieu, LA
Built 1992 Load: 32.4 t ADT: 25,890
LA0108
FairOver: MAPLE FORK
0.8 MI N of I-10, Calcasieu, LA
Built 1945 Load: 32.4 t ADT: 22,287
LA0379
FairOver: DRAIN
0.01 MI E OF LA 27, Calcasieu, LA
Built 1964 Load: 32.4 t ADT: 5,525
E TANK FARM RD
FairOver: BLACK BAYOU TRIB.
0.6 MI W OF WARD LINE RD, Calcasieu, LA
Built 1988 Load: 32.4 t ADT: 1,449
CONTOUR ST
FairOver: CONTRABAND BAYOU
0.09 MI W of LA 385, Calcasieu, LA
Built 1970 Load: 32.4 t ADT: 2,440
GREEN MOORE RD
FairOver: DYNAMITE SLOUGH
0.9 MI WEST OF LA 109, Calcasieu, LA
Built 1987 Load: 32.4 t ADT: 248
BANKEN RD
FairOver: LITTLE RIVER
0.9 MI EAST OF LA 27, Calcasieu, LA
Built 1986 Load: 32.4 t ADT: 1,547
LA0082
FairOver: SABINE LAKE
LA 82 @ TEXAS LINE, Cameron, LA
Built 2010 Load: 32.4 t ADT: 1,900
LA0082
FairOver: NORTH LABOVE BAYOU
1.2 MI. SOUTH OF LA 1143, Cameron, LA
Built 2013 Load: 32.4 t ADT: 2,899
LA0027
FairOver: DRAIN
2.2 MI E OF LA 1142, Cameron, LA
Built 1953 Load: 32.4 t ADT: 1,696
LA0027
FairOver: CREOLE CANAL
0.01 MI W of LA 1143, Cameron, LA
Built 1955 Load: 32.4 t ADT: 2,194
LA0027
FairOver: DRAIN
0.98 MI. NORTH OF LA 384, Cameron, LA
Built 1957 Load: 32.4 t ADT: 2,488
US0090
FairOver: DRAIN
2.7 MI. E. OF LA 1131, Jefferson Davis, LA
Built 1934 Load: 32.4 t ADT: 4,262
US0090
FairOver: CANAL
3.7 MI EAST OF LA 395, Jefferson Davis, LA
Built 1974 Load: 32.4 t ADT: 4,964
US0090
FairOver: CANAL
1.2 MI EAST OF LA 102, Jefferson Davis, LA
Built 1954 Load: 32.4 t ADT: 3,789
US0190
FairOver: BAYOU
3.61 MI EAST OF LA 99, Jefferson Davis, LA
Built 1934 Load: 32.4 t ADT: 5,849
US0165
FairOver: GUM BAYOU
4.7 MI NORTH OF LA 102, Jefferson Davis, LA
Built 1932 Load: 32.4 t ADT: 11,886
LA0026
FairOver: DRAIN
0.6 MI N of LA102, Jefferson Davis, LA
Built 1932 Load: 32.4 t ADT: 5,622
Showing 3,351-3,400 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.