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
7TH ST
FairOver: DRAIN
0.3 MI E of LA 385, Calcasieu, LA
Built 1999 Load: 29.5 t ADT: 2,385
LA1126
FairOver: BAYOU CHENE
4.5 MILES EAST JCT 99 ON, Jefferson Davis, LA
Built 2009 Load: 29.5 t ADT: 507
LA1126
FairOver: GRAND MARIAS BAYOU
5.22 MILES EAST OF JCT LA, Jefferson Davis, LA
Built 2011 Load: 29.5 t ADT: 507
LA0102
FairOver: BROADMORE DITCH
0.25 MI E OF INT LA 26, Jefferson Davis, LA
Built 1999 Load: 29.5 t ADT: 832
LA0153
FairOver: CAESAR CREEK
.99 MI. N OF INT LA9, Natchitoches, LA
Built 1977 Load: 29.5 t ADT: 609
LA0153
FairOver: DEMERY CREEK
5.50 MI. N OF INT LA9, Natchitoches, LA
Built 1977 Load: 29.5 t ADT: 609
LA0153
FairOver: ANTOINE CREEK
9.82 MI. N OF INT LA9, Natchitoches, LA
Built 1977 Load: 29.5 t ADT: 609
LA0118
FairOver: CREEK
2.85 MI. WEST OF LA 117, Natchitoches, LA
Built 1982 Load: 29.5 t ADT: 1,471
LA0124
FairOver: CREEK
3.8 MI EAST OF US 165, LaSalle, LA
Built 1980 Load: 29.5 t ADT: 1,838
LA0941
FairOver: I-10
JCT of I-10 & LA 941, Ascension, LA
Built 1979 Load: 29.5 t ADT: 2,750
I0110
FairOver: US 61B & LA73
JCT of I-110 & LA 73, East Baton Rouge, LA
Built 1963 Load: 29.5 t ADT: 44,500
W Oak Ln
FairOver: BAYOU MARINGOUIN
0.9M SOUTH OF RAMAH, Iberville, LA
Built 1992 Load: 29.5 t ADT: 130
LA0078
FairOver: PORT ALLEN LOCK
256 Ft S of LA 979, Pointe Coupee, LA
Built 1980 Load: 29.5 t ADT: 4,464
I0012
FairOver: TCHEFUNCTE RIVER
1.1 miles east of LA 21, St. Tammany, LA
Built 1975 Load: 29.5 t ADT: 79,563
CAUSEWAY SB
FairOver: LAKE PONTCHARTRAIN
CAUSEWAY SOUTHBOUND, St. Tammany, LA
Built 1956 Load: 29.5 t ADT: 18,830
LA3134
FairOver: B.DES FAMILLIES
.01 MI NORTH OF LA 45, Jefferson, LA
Built 1981 Load: 29.8 t ADT: 7,837
LA3134
FairOver: B.DES FAMILLIES
.01 MI NORTH OF LA 45, Jefferson, LA
Built 1981 Load: 29.8 t ADT: 5,599
PATRICIA ST
FairOver: EICKES CANAL
0.3 MI N OF LA 39, St. Bernard, LA
Built 2000 Load: 29.8 t ADT: 1,419
US0090
FairOver: SWAMP
.1 MI.FROM LA.20, Terrebonne, LA
Built 1995 Load: 29.8 t ADT: 2,629
LA0365
FairOver: GRAND COULEE DITCH
0.31 MI E of LA 370, Acadia, LA
Built 1979 Load: 29.8 t ADT: 568
LA3070
FairOver: BAYOU JONAS
1.73 MI NORTH OF LA 100, Acadia, LA
Built 1980 Load: 29.8 t ADT: 956
I0049
FairOver: BAYOU CALLAHAN
0.8 MI NORTH OF LA 3233, St. Landry, LA
Built 1962 Load: 29.8 t ADT: 44,243
I0220
FairOver: RUSSELL ROAD
5.4 MI NORTH OF I-20, Caddo, LA
Built 1979 Load: 29.8 t ADT: 42,148
84TH ST
FairOver: BRUSHY BAYOU
0.10 MI EAST OF WYNNGATE, Caddo, LA
Built 1987 Load: 29.8 t ADT: 3,594
I0049
FairOver: LT FRONTAGE RD RAMBIN B.
0.3 MILES NORTH OF LA 175, De Soto, LA
Built 2006 Load: 29.8 t ADT: 1,490
LAKESHORE DRIVE
FairOver: CANEY LAKE
1.5 MI. NW WOMACK, Jackson, LA
Built 1985 Load: 29.8 t ADT: 355
US0425
FairOver: BAYOU BARTHOLOMEW
.01 MI SOUTH OF LA 593, Morehouse, LA
Built 1985 Load: 29.8 t ADT: 7,629
LA0002
FairOver: OUACHITA STERLINGTON
.68 MILES NORTH OF CALDWE, Ouachita, LA
Built 2009 Load: 29.8 t ADT: 6,258
WASHINGTON ST
FairOver: DRAINAGE CANAL
WASHINGTON ST. MONRO, Ouachita, LA
Built 1971 Load: 29.8 t ADT: 2,000
LA0027
FairOver: HOUSTON RIVER
0.3 MI N OF LA 379, Calcasieu, LA
Built 1982 Load: 29.8 t ADT: 7,798
FDR 831
FairOver: CYPRESS CREEK
1.6 MI. EAST LA. 159, Webster, LA
Built 1972 Load: 29.8 t ADT: 30
Hwy 3102
FairOver: LARTO BAYOU
3.2 MI W of LA 124, Catahoula, LA
Built 1977 Load: 29.8 t ADT: 130
LA0124
FairOver: CREEK
3.9 MI EAST OF US 165, LaSalle, LA
Built 1980 Load: 29.8 t ADT: 318
LA0127
FairOver: SANDY CREEK
.75 MI NORTH OF LA 125, LaSalle, LA
Built 1974 Load: 29.8 t ADT: 314
LA3213
FairOver: GRAMERCY BRIDGE WEST BAN
GRAMERCY, St. John the Baptist, LA
Built 1995 Load: 29.8 t ADT: 13,743
I0010
FairOver: CARROLTON AVE
1.98 MI EAST OF I-610, Orleans, LA
Built 1961 Load: 29.9 t ADT: 29,280
US0090
FairOver: OVER CITY STREETS
.62 MI EAST OF US 90, Orleans, LA
Built 1960 Load: 29.9 t ADT: 49,920
LA0023
FairOver: DOULLUT CANAL
46.9 MI SOUTH OF LA 406, Plaquemines, LA
Built 1975 Load: 29.9 t ADT: 5,170
US0090
FairOver: B DESALLEMANDS
.4 MI WEST OF LA 362, St. Charles, LA
Built 1961 Load: 29.9 t ADT: 20,956
US0090
FairOver: B DESALLEMANDS
.4 MI WEST OF LA 362, St. Charles, LA
Built 1961 Load: 29.9 t ADT: 17,200
US0090
FairOver: DRAIN CANAL
4.3 MI EAST OF LA 633, St. Charles, LA
Built 1940 Load: 29.9 t ADT: 25,051
I0310
FairOver: RAMP"C" FROM I 310 SB
.36 MI SOUTH OF LA 18, St. Charles, LA
Built 1979 Load: 29.9 t ADT: 47,396
LA1096
FairOver: I-10
1.5 Mi NE of LA 95, Acadia, LA
Built 1965 Load: 29.9 t ADT: 509
LA0094
FairOver: VERMILION RIVER
1.0 MI E OF LA 353, St. Martin, LA
Built 1954 Load: 29.9 t ADT: 18,293
I0020
FairOver: US 71 KCS RR RAMP SW
0.6 M E OF DIAMOND JACK B, Bossier, LA
Built 1966 Load: 29.9 t ADT: 69,892
I0020
FairOver: ICG RR
.5 MI EAST OVER LA 72, Bossier, LA
Built 1967 Load: 29.9 t ADT: 71,593
US0071
FairOver: TWELVE MILE BAYOU
.1 MI NORTH OF LA 173, Caddo, LA
Built 1990 Load: 29.9 t ADT: 22,553
I0220
FairOver: I-220 N-S OVER W-N
0.23 MI NORTH OF I-20, Caddo, LA
Built 1985 Load: 29.9 t ADT: 13,700
Bradshaw Rd.
FairOver: I-49
3.78 MI N OF LA 509 INTG, De Soto, LA
Built 1986 Load: 29.9 t ADT: 1,930
LA0548
FairOver: LITTLE GLADE CR
4.69 MI EAST OF LA 34, Jackson, LA
Built 1949 Load: 29.9 t ADT: 280
Showing 2,651-2,700 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.