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
LA0513
FairOver: CREEK
8.3 MI NORTH OF LA 346, De Soto, LA
Built 1975 Load: 23.0 t ADT: 243
7th St
FairOver: LITTLE CROOKED CREEK
0.5 MI EAST OF LA 7, Webster, LA
Built 1985 Load: 23.0 t ADT: 1,750
US0190
FairOver: BAYOU SERPENT
2.86 MI. E OF INT US165, Allen, LA
Built 1932 Load: 23.0 t ADT: 6,929
LA0110
FairOver: HICKORY BRANCH
2.0 MI W OF US171, Beauregard, LA
Built 1948 Load: 23.0 t ADT: 2,079
DOISE ROAD
FairOver: GULLY
1.23 MI. E. OF INT. 37, Jefferson Davis, LA
Built 1981 Load: 23.0 t ADT: 70
US0065
FairOver: MISSISSIPPI RIVER
.01 MI EAST OF LA 131, Concordia, LA
Built 1940 Load: 23.0 t ADT: 21,661
LA0575
FairOver: SHACKLEFORD LAKE
6.8 MI NORTH OF LA 4, Tensas, LA
Built 1978 Load: 23.0 t ADT: 26
I0010
FairOver: DALRYMPLE DR/CITY PK LAK
I0010, East Baton Rouge, LA
Built 1964 Load: 23.0 t ADT: 187,499
I0010
FairOver: LA 427-ACADIAN TW/KCS RR
I0010, East Baton Rouge, LA
Built 1964 Load: 23.0 t ADT: 76,350
I0010
FairOver: WARDS CREEK
I0010, East Baton Rouge, LA
Built 1967 Load: 23.0 t ADT: 32,092
Callegan W.
FairOver: DRAIN BAYOU
2.1 MI S.W. OF LA 1, Pointe Coupee, LA
Built 2004 Load: 23.0 t ADT: 70
LA0022
FairOver: CHINQUAPIN CANAL
3.8 M E OF LA 16, Livingston, LA
Built 1973 Load: 23.0 t ADT: 2,201
US0190
FairOver: DRAIN
1.4 M W OF I-55, Tangipahoa, LA
Built 1932 Load: 23.0 t ADT: 14,856
Whiskey Ln Rd
FairOver: PONCHATOULA CREEK BR.
1.0MI SO/JCTLA442WISKEYLN, Tangipahoa, LA
Built 1997 Load: 23.0 t ADT: 1,546
MONTICELLO ST
FairOver: WHISKEY CHITTO CREEK
VE 844 414, Vernon, LA
Built 1978 Load: 23.0 t ADT: 10
WHITNEY AVE
FairOver: DRAINAGE CANAL
0.1 MI N OF LA 23, Jefferson, LA
Built 2004 Load: 23.3 t ADT: 2,500
US0090-B
FairOver: RAMP MC-3
2.2 MI EAST OF LA 23, Jefferson, LA
Built 1984 Load: 23.3 t ADT: 15,955
TRAFFIC CIRCLE
FairOver: US 61 UNDER TRAF. CIRCLE
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 5,962
Airline Dr
FairOver: DRIVEWAY
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 6,768
Airline Dr
FairOver: LA SOUTHERN RR
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 7,021
N. Causeway BLVD
FairOver: DRIVEWAY
0.61 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 7,378
N. Causeway BLVD
FairOver: LA 611-9 & JOHNSON ST
0.62 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 7,021
CAUSEWAY BLVD
FairOver: US 61 & LA 611-9 & CIRCL
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 44,036
N. Causeway BLVD
FairOver: LA 611-9 & JOHNSON ST
0.62 MI N OF US 90, Jefferson, LA
Built 1957 Load: 23.3 t ADT: 7,378
MAYO ROAD
FairOver: MORRISON CANAL
0.0 MI.N.OF MORRISON, Orleans, LA
Built 1960 Load: 23.3 t
LA1264
FairOver: ON-RAMP TO SEABROOK BR.
.65 MI. W. OF DOWNMAN RD., Orleans, LA
Built 1975 Load: 23.3 t ADT: 13,713
LA0058
FairOver: PETIT CAILLOU
.01 MI EAST OF LA 56, Terrebonne, LA
Built 1964 Load: 23.3 t ADT: 5,194
South A St.
FairOver: QUEUE DE TORTUE BAYOU
0.25 Mi S of US 90, Lafayette, LA
Built 1983 Load: 23.3 t ADT: 100
US0171
FairOver: BUCHANAN BAYOU
3.4 MI. S. OF LA 526, Caddo, LA
Built 1953 Load: 23.3 t ADT: 16,911
Huckaby Rd
FairOver: HUCKABY RD. KELLY B.
1.5 MI W OF US 71 IN, Caddo, LA
Built 1980 Load: 23.3 t ADT: 80
Mira-Myrtis Rd
FairOver: BLACK BAYOU LAKE
1 MI. E OF LA. HWY 1, Caddo, LA
Built 1978 Load: 23.3 t ADT: 305
LA0787
FairOver: CREEK
.14 MI EAST OF LA 507, Red River, LA
Built 1982 Load: 23.3 t ADT: 198
S. POLK AVE
FairOver: DRAIN CANAL
.4 MI. S. INT. X01, Jackson, LA
Built 1965 Load: 23.3 t ADT: 310
CAMP RD
FairOver: N CHENIERE CREEK
AT INT LA HWY 546, Ouachita, LA
Built 1979 Load: 23.3 t ADT: 160
BREARD ST
FairOver: YOUNGS BAYOU
BREARD ST. MONROE LA, Ouachita, LA
Built 1961 Load: 23.3 t ADT: 1,500
LA0017
FairOver: TIGER BAYOU
5.0 MI NORTH OF LA 586, West Carroll, LA
Built 1952 Load: 23.3 t ADT: 2,161
SOUTH POST OAK RD
FairOver: DRAIN
1.2 MI S of US 90, Calcasieu, LA
Built 2002 Load: 23.3 t ADT: 2,599
LA1130
FairOver: DRAIN
1.0 MI NW OF INT US 190, Jefferson Davis, LA
Built 1964 Load: 23.3 t ADT: 448
Klock St
FairOver: BAYOU BOEUF
0.45 MILE EAST OF US 71, Rapides, LA
Built 1997 Load: 23.3 t ADT: 250
Old Hermitage Pkwy
FairOver: DRAIN CANAL
.30 MI E. OF GARDERE LN., East Baton Rouge, LA
Built 1984 Load: 23.3 t ADT: 1,572
US0061
FairOver: METAIRIE RELIEF CANAL
.6 MI EAST OF I-10, Orleans, LA
Built 1939 Load: 23.6 t ADT: 31,223
US0061
FairOver: METAIRIE RELIEF CANAL
0.6 MI. WEST OF I-10, Orleans, LA
Built 1939 Load: 23.6 t ADT: 28,615
LA0098
FairOver: CREEK
2.81 MI WEST OF LA 97, Acadia, LA
Built 1963 Load: 23.6 t ADT: 1,790
LA0365
FairOver: BAYOU WYKOFF
1.6 MI EAST OF LA 1101, Acadia, LA
Built 1959 Load: 23.6 t ADT: 1,042
LA0092
FairOver: CREEK
1.3 MI. North of LA 1119, Acadia, LA
Built 1962 Load: 23.6 t ADT: 462
LA0095
FairOver: BAYOU WYKOFF
0.6 MI NORTH OF LA 365, Acadia, LA
Built 1963 Load: 23.6 t ADT: 5,275
LA0091
FairOver: RICHARDS GULLY
2.5 Miles North of LA 368, Acadia, LA
Built 1961 Load: 23.6 t ADT: 1,617
LA0029
FairOver: BAYOU PETITE PASS
2.5 MI N. of LA 363, Evangeline, LA
Built 1961 Load: 23.6 t ADT: 2,163
LA0029
FairOver: COULEE TEAL
5.3 Mi N of La 363, Evangeline, LA
Built 1961 Load: 23.6 t ADT: 2,163
LA0106
FairOver: BAYOU COCODRIE
0.9 MI East of LA 115, Evangeline, LA
Built 1962 Load: 23.6 t ADT: 1,069
Showing 1,601-1,650 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.