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
LA0441
GoodOver: I-12
LA 0441, Livingston, LA
Built 1968 Load: 40.8 t ADT: 4,270
LA1036
GoodOver: HOG BAYOU
4.3 M N OF LA 442, Livingston, LA
Built 1980 Load: 40.8 t ADT: 601
I0012
GoodOver: BAYOU LIBERTY
I0012, St. Tammany, LA
Built 1972 Load: 40.8 t ADT: 78,365
I0012
GoodOver: BAYOU LIBERTY
I0012, St. Tammany, LA
Built 1972 Load: 40.8 t ADT: 29,236
I0012
GoodOver: TANGIPAHOA RELIEF
I0012, Tangipahoa, LA
Built 1975 Load: 40.8 t ADT: 53,386
I0012
GoodOver: TANGIPAHOA RELIEF
I0012, Tangipahoa, LA
Built 1975 Load: 40.8 t ADT: 17,665
I0012
GoodOver: TANGIPAHOA RIVER RELIEF
I0012, Tangipahoa, LA
Built 1975 Load: 40.8 t ADT: 17,665
LA0443
GoodOver: TANGIPAHOA RIVER RELIEF
1.2 mi NE of LA 1064, Tangipahoa, LA
Built 1986 Load: 40.8 t ADT: 6,478
LA3234
GoodOver: YELLOW WATER CREEK
1.35 MI EAST I-55 INTER, Tangipahoa, LA
Built 1995 Load: 40.8 t ADT: 18,303
LA0438
GoodOver: EAST FORK PUSHAPATAPA
0.4 M E OF LA 62, Washington, LA
Built 1981 Load: 40.8 t ADT: 925
Dover Rd.
GoodOver: DRAINAGE
0.24 MI N OF LA 3073, Lafayette, LA
Built 1974 Load: 41.1 t ADT: 700
Golden Meadows
GoodOver: MACKS BAYOU
1.2 MI E OF HWY 71, Bossier, LA
Built 1979 Load: 41.1 t ADT: 30
LA0169
GoodOver: SODA LAKE CANAL
3.3 MI. E. OF LA 1, Caddo, LA
Built 2013 Load: 41.1 t ADT: 311
Old Arcadia Rd
GoodOver: TRIB. TO COOLEY BRANCH
0.7 MI E OF HWY 79, Webster, LA
Built 2004 Load: 41.1 t ADT: 543
HENRY AVE
GoodOver: STAULKINGHEAD CREEK
0.4 MI E of LA 2, Morehouse, LA
Built 2004 Load: 41.1 t ADT: 600
MILTON WHITE RD
GoodOver: DRAIN TO CYPRESS BAYOU
0.3 MI W of US 425, Morehouse, LA
Built 2005 Load: 41.1 t ADT: 450
CHOUPIQUE RD
GoodOver: GOVERNMENT DITCH
3.0 MI S OF LA 108, Calcasieu, LA
Built 2014 Load: 41.1 t ADT: 162
COX LN
GoodOver: BAYOU SANTABARB TRIB.
0.65 MILE SOUTH OF LA 478, Natchitoches, LA
Built 1996 Load: 41.1 t ADT: 300
Little River Rd
GoodOver: LITTLE RIVER
0.01 MILES WEST OF LA 491, Natchitoches, LA
Built 2000 Load: 41.1 t ADT: 102
J D Henry Rd
GoodOver: LITTLE RIVER
1.75 MILES EAST OF LA 119, Natchitoches, LA
Built 2000 Load: 41.1 t ADT: 102
Many Marthaville
GoodOver: BAYOU DUPONT TRIBUTARY
1.64 M. S. OF MAIN ST. M, Natchitoches, LA
Built 1997 Load: 41.1 t ADT: 205
FREE RD
GoodOver: SAN MIGUEL CREEK
FREE ROAD, Sabine, LA
Built 2000 Load: 41.1 t ADT: 60
LA0010
GoodOver: GLADE BRANCH
10.71 MI EAST OF LA 467, Vernon, LA
Built 2007 Load: 41.1 t ADT: 1,673
COOPER CHURCH RD
GoodOver: CASTOR BAYOU
4.82M WEST OF US 171, Vernon, LA
Built 1992 Load: 41.1 t ADT: 180
US0167
GoodOver: DUGDEMONA RIVER
0.4 MI. NORTH OF LA 1231-, Winn, LA
Built 2013 Load: 41.1 t ADT: 5,107
Mixon Rd
GoodOver: TARVER CREEK
LOG MI 3.47 FR 612 TO 618, LaSalle, LA
Built 1999 Load: 41.1 t ADT: 100
I0010
GoodOver: DRAINAGE CANAL
1.0 M SE of I-10&LA 44, Ascension, LA
Built 1979 Load: 41.1 t ADT: 57,444
I0110
GoodOver: EVANGELINE ON RAMP (N.B.
I0110, East Baton Rouge, LA
Built 1971 Load: 41.1 t ADT: 8,250
W Lee Dr
GoodOver: BAYOU FOUNTAIN
.01 MI SOUTH/HIGHLAND, East Baton Rouge, LA
Built 1985 Load: 41.1 t ADT: 24,832
LA0016
GoodOver: DRAIN
2.6 MI WEST OF JCT 449, St. Helena, LA
Built 1997 Load: 41.1 t ADT: 4,844
Monroe Cr. Rd
GoodOver: CREEK
4.7 MILES WEST OF LA 21, Washington, LA
Built 2014 Load: 41.1 t ADT: 492
BAYOU GARDENS BLVD
GoodOver: ST. LOUIS BAYOU
1.2 MI NE OF LA 660, Terrebonne, LA
Built 2017 Load: 41.5 t ADT: 6,028
LA0523
GoodOver: SAND BEACH BAYOU
0.8 MI W OF JCT LA 1, Caddo, LA
Built 2011 Load: 41.5 t ADT: 10,628
I0049
GoodOver: BLACK BAYOU
1.28 M. N. OF LA 530, Caddo, LA
Built 2013 Load: 41.5 t ADT: 6,846
I0049
GoodOver: BLACK BAYOU
1.28 M. N. OF LA 530, Caddo, LA
Built 2013 Load: 41.5 t ADT: 53,023
PINE BLUFF RD
GoodOver: CYPRESS CREEK
1.9 MI. S. HWY. 557, Ouachita, LA
Built 1983 Load: 41.5 t ADT: 360
10010
GoodOver: MAPLE FORK BAYOU
1.44 MI W OF I-210, Calcasieu, LA
Built 2022 Load: 41.5 t ADT: 11,437
US0071
GoodOver: U.P. RR
0.5 Mi. South of US 167, Rapides, LA
Built 2019 Load: 41.5 t ADT: 6,861
Mollylea Dr
GoodOver: Jones Creek
0.15 miles East of Sharp, East Baton Rouge, LA
Built 2017 Load: 41.5 t ADT: 1,500
LA0435
GoodOver: DRAIN
4.29 MILES EAST OF LA 36, St. Tammany, LA
Built 2010 Load: 41.5 t ADT: 4,200
LA0435
GoodOver: ABITA CREEK
4.40 MILES EAST OF LA 36, St. Tammany, LA
Built 2010 Load: 41.5 t ADT: 4,200
Amber St
GoodOver: BRIDGE OVER FRENCH BRANC
N. OF 190 AMBER ST. LM 10, St. Tammany, LA
Built 2001 Load: 41.5 t ADT: 550
I0010
GoodOver: ON RP TO I10EAST
0.5 MI S OF VETERANS BLVD, Jefferson, LA
Built 1967 Load: 41.7 t ADT: 15,955
I0010
GoodOver: OFF RP FROM I 10 WEST
0.6 MI NW OF I 10, Jefferson, LA
Built 1967 Load: 41.7 t ADT: 15,955
I0010
GoodOver: ON RP TO I 10 WEST
1.8 MI N OF US 61, Jefferson, LA
Built 1967 Load: 41.7 t ADT: 15,955
US0090
GoodOver: OFF RAMP I
.2 MI EAST OF LA 182, Lafourche, LA
Built 1980 Load: 41.7 t ADT: 12,192
I0610
GoodOver: CANAL BLVD
.8 MI EAST OF I-10, Orleans, LA
Built 1973 Load: 41.7 t ADT: 29,280
I0610
GoodOver: ON RP FROM BROAD STREET
.2 MI EAST OF LA 3071, Orleans, LA
Built 1975 Load: 41.7 t ADT: 7,620
I0510
GoodOver: I-510(PARIS RD) OVER I-1
1.2 M S. L.PONTCHARTRAIN, Orleans, LA
Built 1967 Load: 41.7 t ADT: 29,280
I0010
GoodOver: I0010
.25 MI WEST OF I-610, Orleans, LA
Built 2000 Load: 41.7 t ADT: 137,542
Showing 10,051-10,100 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.