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
Thomas Rd
FairOver: TYSON BRANCH
0.6 MILES NORTH OF LA 168, Caddo, LA
Built 2000 Load: 21.4 t ADT: 57
US0079
FairOver: CREEK
5.0 MI NORTH OF LA 2, Claiborne, LA
Built 1936 Load: 21.4 t ADT: 5,728
LA0155
FairOver: BRUSHY CREEK
6.33MI EAST OF US 71, Red River, LA
Built 1972 Load: 21.4 t ADT: 1,130
LA0143
FairOver: CROSS BAYOU
5.9 MI NORTH OF LA 616, Ouachita, LA
Built 1952 Load: 21.4 t ADT: 3,674
LITTLE RD
FairOver: BIG CREEK
LOGMI 4.08 FR 1DE TO, Richland, LA
Built 1976 Load: 21.4 t ADT: 100
US0165
FairOver: DRAIN
5.0 MI. N. OF LA 26, Allen, LA
Built 1931 Load: 21.4 t ADT: 11,886
LA0483
FairOver: CREEK
3.58 MI. NORTH OF US 171, Sabine, LA
Built 1929 Load: 21.4 t ADT: 525
Yankee Springs
FairOver: Yankee Springs Creek
0.32 MI. EAST OF LA 1233, Winn, LA
Built 1965 Load: 21.4 t ADT: 166
N Marchand Ave
FairOver: NEW RIVER
GONZALES .2 MI WEST LA 44, Ascension, LA
Built 1996 Load: 21.4 t ADT: 10
Peairs Rd
FairOver: LITTLE SANDY CREEK
3.5 MI.E.LA64 LA410, East Baton Rouge, LA
Built 1965 Load: 21.4 t ADT: 1,149
US0061
FairOver: BLIND RIVER
US0061, St. James, LA
Built 1954 Load: 21.4 t ADT: 8,171
Honey Island Swamp
FairOver: DUCK BAYOU
0.5M EAST OF I-59, St. Tammany, LA
Built 1982 Load: 21.4 t
LA0010
FairOver: PUSHEPATAPPA
2.5 MILES EAST OF LA 21, Washington, LA
Built 1998 Load: 21.4 t ADT: 570
Blood Bend Rd.
FairOver: Elm Bayou
0.90 Mi W of La 115, Evangeline, LA
Built 2005 Load: 21.5 t ADT: 26
RABB RD
FairOver: COLVIN CREEK
DOWNTOWN VIENNA, Lincoln, LA
Built 1975 Load: 21.5 t ADT: 114
Louis White Rd
FairOver: DRAINAGE BAYOU
1.2 MI SW DUTCHTOWN, Ascension, LA
Built 1989 Load: 21.5 t ADT: 10
Lomire Rd
FairOver: Canal #5
0.7 Mi S of La 335, Vermilion, LA
Built 2004 Load: 21.6 t ADT: 150
JOE DEATS RD
FairOver: PEDDICOAT BAYOU
0.7 Mi. EAST of LA 841, Ouachita, LA
Built 2006 Load: 21.6 t ADT: 80
SWEET LILY RD
FairOver: LITTLE CANE CREEK
1.8 MI. N. INT. 258, Union, LA
Built 1978 Load: 21.6 t ADT: 10
LA0016
FairOver: WRIGHTS CREEK
LA0016, St. Tammany, LA
Built 1968 Load: 21.6 t ADT: 1,388
LA0016
FairOver: HOLDENS CREEK
LA0016, St. Tammany, LA
Built 1968 Load: 21.6 t ADT: 1,388
LA1054
FairOver: BUNCH BRANCH
2.3 M NE OF LA 16, Tangipahoa, LA
Built 1955 Load: 21.6 t ADT: 1,257
US0090-B
FairOver: RAMP BA-1
2.6 MI EAST OF LA 23, Jefferson, LA
Built 1984 Load: 21.7 t ADT: 15,955
JOURDAN ROAD
FairOver: CITY STREET/RAILROAD
.15 MI S OF DOWNMAN ROAD, Orleans, LA
Built 1991 Load: 21.7 t ADT: 22,680
LA0057
FairOver: DULAC BAYOU
8 MI NORTH OF LA 56, Terrebonne, LA
Built 1971 Load: 21.7 t ADT: 952
LA0737
FairOver: GRAND CANAL 02
0.16 MI EAST OF LA 686, St. Martin, LA
Built 1973 Load: 21.7 t ADT: 575
Section 28 Rd
FairOver: MARTIN BAYOU
1.6 MI E of LA 3039, St. Martin, LA
Built 2003 Load: 21.7 t ADT: 608
Zenor Bridge Rd
FairOver: TECHE BAYOU
0.05 Mi NW of LA 182, St. Mary, LA
Built 1969 Load: 21.7 t ADT: 200
Centerville Br Rd.
FairOver: TECHE BAYOU
0.1 Mi N of La 182, St. Mary, LA
Built 1972 Load: 21.7 t ADT: 575
Sorrel Bridge Rd
FairOver: TECHE BAYOU
0.2 Mi N of LA 182, St. Mary, LA
Built 1972 Load: 21.7 t ADT: 250
CRABAPPLE DRIVE
FairOver: LAMBERT PARK DITCH
1.1 MI. EAST OF US 171, Caddo, LA
Built 1983 Load: 21.7 t ADT: 8,132
STONER STREET
FairOver: LINE AVE
1.3 MI. WEST OF LA 1, Caddo, LA
Built 1960 Load: 21.7 t ADT: 10,120
Gamm Rd Ext
FairOver: GAMM RD EXT SWIFT BAYOU
1.15 MI N OF SELF ROAD, Caddo, LA
Built 1980 Load: 21.7 t ADT: 78
S. HUDSON AVE
FairOver: CREEK
0.65 MI S of LA 4, Jackson, LA
Built 1960 Load: 21.7 t ADT: 7,500
US0080
FairOver: CREEK
4.2 MI EAST OF LA 33, Lincoln, LA
Built 1952 Load: 21.7 t ADT: 3,275
SWARTZ SCHOOL RD
FairOver: CONEY CREEK
0.3 MI. E. of LA 139, Ouachita, LA
Built 1979 Load: 21.7 t ADT: 1,330
CC BEL RD
FairOver: BLUE BAYOU
1.7 MI. W. OF POWELL RD, Allen, LA
Built 2001 Load: 21.7 t ADT: 1,148
LA0008
FairOver: LITTLE RIVER RELIEF
8.47 MI. NE OF US 165, Grant, LA
Built 1981 Load: 21.7 t ADT: 1,590
LA1216
FairOver: DITCH
8.7 MI EAST OF US 171, Sabine, LA
Built 1966 Load: 21.7 t ADT: 209
Coldwater
FairOver: COLDWATER CREEK
1.37 MI. WEST OF LA 156, Winn, LA
Built 1970 Load: 21.7 t ADT: 288
Savoy Rd
FairOver: NEW RIVER
367 Ft N OF LA 429, Ascension, LA
Built 1975 Load: 21.7 t ADT: 50
LA0001
FairOver: CONCIENNE CANAL
LA0001, Assumption, LA
Built 1952 Load: 21.7 t ADT: 6,998
US0051
FairOver: CARPENTER BRANCH
0.1 M N OF LA 10, Tangipahoa, LA
Built 1956 Load: 21.7 t ADT: 2,199
LA0300
FairOver: REGGIO CANAL
1.2 MI S OF LA 46, St. Bernard, LA
Built 1957 Load: 21.8 t ADT: 728
LA0182
FairOver: CARO CANAL
.06 MI WEST OF LA 316, Terrebonne, LA
Built 1957 Load: 21.8 t ADT: 3,687
LA0013
FairOver: QUEUE DE TORTUE BAYOU
1.0 MI SOUTH OF LA 1115, Acadia, LA
Built 1952 Load: 21.8 t ADT: 4,668
LA0098
FairOver: CREEK
0.21 MI EAST OF LA 1120, Acadia, LA
Built 1950 Load: 21.8 t ADT: 773
LA0100
FairOver: B DES CANNES EVNG
1.5 Mi. E. of LA 97, Acadia, LA
Built 1951 Load: 21.8 t ADT: 1,128
LA0365
FairOver: BAYOU PLAQUEMINE
2.1 MI EAST OF LA 367, Acadia, LA
Built 1952 Load: 21.8 t ADT: 1,570
LA0010
FairOver: MORRIS BRANCH
1.4 MI WEST OF LA 106, Evangeline, LA
Built 1950 Load: 21.8 t ADT: 3,308
Showing 1,351-1,400 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.