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
LA3064
FairOver: I-12
0.6 Mi N of I-10, East Baton Rouge, LA
Built 1967 Load: 27.2 t ADT: 33,927
Kenilworth Pkwy
FairOver: DAWSON CREEK
0.5 M SW OF LA 427, East Baton Rouge, LA
Built 1973 Load: 27.2 t ADT: 5,125
Morgan Rd
FairOver: DRAINAGE CANAL
0.3 Mi. S. of LA 37, East Baton Rouge, LA
Built 1970 Load: 27.2 t ADT: 1,065
Lemon Rd
FairOver: UNNAMED CREEK
EAST AVE. SLAUGHT L, East Feliciana, LA
Built 1975 Load: 27.2 t ADT: 78
US0190
FairOver: HOG BRANCH
US0190, Livingston, LA
Built 1932 Load: 27.2 t ADT: 7,126
US0190
FairOver: TICKFAW RIVER RELIEF
US0190, Livingston, LA
Built 1932 Load: 27.2 t ADT: 7,126
US0190
FairOver: BLOOD RIVER
US0190, Livingston, LA
Built 1932 Load: 27.2 t ADT: 4,992
LA0042
FairOver: POLEY BAYOU
0.7 M N OF LA 16, Livingston, LA
Built 1960 Load: 27.2 t ADT: 4,071
LA0448
FairOver: MILL CREEK
LA0448, St. Helena, LA
Built 1962 Load: 27.2 t ADT: 547
LA1045
FairOver: TICKFAW RIVER RELIEF
LA1045, St. Helena, LA
Built 1962 Load: 27.2 t ADT: 1,509
LA1045
FairOver: TICKFAW RIVER RELIEF
LA1045, St. Helena, LA
Built 1962 Load: 27.2 t ADT: 1,509
US0190
FairOver: BAYOU LIBERTY
US0190, St. Tammany, LA
Built 1933 Load: 27.2 t ADT: 16,944
LA0025
FairOver: MORGAN BRANCH
0.8 M S OF LA 40, St. Tammany, LA
Built 1963 Load: 27.2 t ADT: 3,684
Honey Island Swamp
FairOver: TILL ED BAYOU
0.3M EAST OF I-59, St. Tammany, LA
Built 1982 Load: 27.2 t
Honey Island Swamp
FairOver: DUCK BAYOU
2.22M EAST OF I-59, St. Tammany, LA
Built 1983 Load: 27.2 t
Honey Island Swamp
FairOver: WOOLY BAYOU
1.88M EAST OF I-59, St. Tammany, LA
Built 1983 Load: 27.2 t
Honey Island Swamp
FairOver: WOOLY BAYOU
1.67M EAST OF I-59, St. Tammany, LA
Built 1983 Load: 27.2 t ADT: 40
Honey Island Swamp
FairOver: WOODS BAYOU
2.2M EAST OF I-59, St. Tammany, LA
Built 1984 Load: 27.2 t
LA0022
FairOver: SELSERS CREEK
1.9 M E OF E JCT. US 51B, Tangipahoa, LA
Built 1938 Load: 27.2 t ADT: 12,900
LA0022
FairOver: DRAIN
1.4 M W OF LA 445, Tangipahoa, LA
Built 1939 Load: 27.2 t ADT: 6,435
LA0022
FairOver: DRAIN
1.3 M W OF LA 445, Tangipahoa, LA
Built 1939 Load: 27.2 t ADT: 6,435
LA0440
FairOver: BIG CREEK
LA0440, Tangipahoa, LA
Built 1960 Load: 27.2 t ADT: 752
Firetower Rd
FairOver: MILE BRANCH
3.3 MI N/E JCT. 445 & 22, Tangipahoa, LA
Built 1999 Load: 27.2 t ADT: 1,844
Harvey Lavigne Rd
FairOver: SIMS CREEK
2.8 MI N OF JCT LA495 &22, Tangipahoa, LA
Built 2001 Load: 27.2 t ADT: 992
LA0021
FairOver: FOSTER CREEK
LA0021, Washington, LA
Built 1960 Load: 27.2 t ADT: 2,646
KAWANEE AVE
FairOver: ELMWOOD CANAL
.04 MILES WEST OF ACADEMY, Jefferson, LA
Built 2008 Load: 27.5 t
US0090-B
FairOver: RAMP LA-4
.2 MI EAST OF LA 23, Jefferson, LA
Built 1985 Load: 27.5 t ADT: 15,955
LA0039
FairOver: Japonica St.
5.2 MI W OF LA 47, Orleans, LA
Built 1957 Load: 27.5 t ADT: 36,993
Earhart to S Broad
FairOver: STREETS
2.0 MI S OF TULANE AVENUE, Orleans, LA
Built 1951 Load: 27.5 t ADT: 5,441
Oliver Rd
FairOver: BIG FOUR DITCH
1.36 Mi. W of LA 332, Vermilion, LA
Built 1960 Load: 27.5 t ADT: 80
LA0526
FairOver: BAYOU PIERRE
1.3 MI EAST OF LA 523, Caddo, LA
Built 1977 Load: 27.5 t ADT: 19,314
LA0526
FairOver: BAYOU PIERRE
1.3 MI EAST OF LA 523, Caddo, LA
Built 1977 Load: 27.5 t ADT: 16,911
WYNGATE BLVD
FairOver: 71ST STREET DITCH
0.8 MI.SO. OF LA 511, Caddo, LA
Built 1956 Load: 27.5 t ADT: 2,200
Jewella
FairOver: AIRPORT DITCH
0.2 MI. SO.OF LA 511, Caddo, LA
Built 1972 Load: 27.5 t ADT: 20,178
Mira-Myrtis Rd
FairOver: BIG BRANCH
2 MI. W OF US71, Caddo, LA
Built 1948 Load: 27.5 t ADT: 40
RWE JONES DRIVE
FairOver: I 20
LA 147 OVER I-20, Lincoln, LA
Built 1963 Load: 27.5 t ADT: 5,192
US0190
FairOver: SWAMP
2.77 MI. W OF INT LA389, Beauregard, LA
Built 1971 Load: 27.5 t ADT: 3,126
US0190
FairOver: BLACK LAKE
1.2 MI. W OF INT LA389, Beauregard, LA
Built 1971 Load: 27.5 t ADT: 3,126
EAST PRIEN LAKE RD
FairOver: KAYOUCHE COULEE
0.8 MI EAST OF LA 14, Calcasieu, LA
Built 2005 Load: 27.5 t ADT: 5,210
LA0101
FairOver: DRAIN
0.4 MI E of US 165, Jefferson Davis, LA
Built 1962 Load: 27.5 t ADT: 3,166
Boy Scout Rd
FairOver: ROARING CREEK
1.25 MI. SOUTH OF LA 112, Rapides, LA
Built 1984 Load: 27.5 t ADT: 30
US0090
FairOver: LA 662 Aligator Bayou
0.8 Mi. E. of Duhon Blvd, Assumption, LA
Built 1998 Load: 27.5 t ADT: 4,014
I0010
FairOver: WASHINGTON STREET
0.7 M S of I-110&LA 73, East Baton Rouge, LA
Built 1963 Load: 27.5 t ADT: 197,070
LA3213
FairOver: MISSISSIPPI RIVER/IC RR
3.0M SOUTH JCT US61/LA641, St. James, LA
Built 1993 Load: 27.5 t ADT: 13,743
Honey Island Swamp
FairOver: DUCK BAYOU
0.7M EAST OF I-59, St. Tammany, LA
Built 1982 Load: 27.5 t
A. TOUSSAINT BLVD
FairOver: BAYOU ST. JOHN
0.6 MI S OF LAKESHOR, Orleans, LA
Built 1963 Load: 27.9 t
DEER CREEK DR
FairOver: 20 ARPENT CANAL
0.05 MI NE OF LA 39, St. Bernard, LA
Built 1985 Load: 27.9 t ADT: 880
OAK RIDGE BLVD
FairOver: 20 ARPENT CANAL
0.05 MI E OF LA 39, St. Bernard, LA
Built 1986 Load: 27.9 t ADT: 385
Veterans Blvd.
FairOver: CANAL
0.2 Mi S of Hickory St., St. Mary, LA
Built 1978 Load: 27.9 t ADT: 330
WINFRED RD
FairOver: COULEE
1.06 MI N. OF LA 92, Vermilion, LA
Built 2014 Load: 27.9 t ADT: 246
Showing 2,351-2,400 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.