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
OLD CAMP RD
FairOver: CREEK
1.1 MI E OF WARD LINE RD, Calcasieu, LA
Built 2008 Load: 40.8 t ADT: 27
LA0397
FairOver: BAYOU
2.9 MI NORTH OF LA 14, Calcasieu, LA
Built 1982 Load: 40.8 t ADT: 9,291
I0210
FairOver: BROAD STREET
2.52 MI EAST OF LA 14, Calcasieu, LA
Built 1977 Load: 40.8 t ADT: 39,934
I0210
FairOver: BROAD STREET
2.52 MI EAST OF LA 14, Calcasieu, LA
Built 1977 Load: 40.8 t ADT: 608
PETE SEAY ROAD
FairOver: I-10
1.1 MI S OF US 90, Calcasieu, LA
Built 1965 Load: 40.8 t ADT: 4,500
I0010
FairOver: RYAN STREET
0.4 M E OF N LAKESHORE DR, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 73,488
I0010
FairOver: RYAN STREET
2.7 MI W OF US 171, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 11,437
I0010
FairOver: BILBO STREET
0.5 M E OF N LAKESHORE DR, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 73,488
I0010
FairOver: BILBO STREET
2.6 MI W OF US 171, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 11,437
I0010
FairOver: KIRKMAN STREET
0.9 MI E OF N LAKESHORE D, Calcasieu, LA
Built 1961 Load: 40.8 t ADT: 73,488
WEST DAVIS DUGAS
FairOver: BAYOU CHOUPIQUE
3.0 MI W of LA 27, Calcasieu, LA
Built 2007 Load: 40.8 t ADT: 1,663
FANCHER ST
FairOver: FARMERS L & C CO. CANAL
0.2 MI EAST OF LA 3063, Calcasieu, LA
Built 1968 Load: 40.8 t ADT: 100
BOYS VILLAGE RD
FairOver: EAST FORK ENGLISH BAYOU
0.2 MI S of LA 3256, Calcasieu, LA
Built 2003 Load: 40.8 t ADT: 591
LA0384
FairOver: NORTH CANAL
4.5 MI E of LA27, Cameron, LA
Built 1985 Load: 40.8 t ADT: 109
US0090
FairOver: EAST LACASSINE BAYOU
0.1 MI E OF LA 99, Jefferson Davis, LA
Built 1985 Load: 40.8 t ADT: 4,262
US0090
FairOver: CHENE BAYOU
2.4 MI EAST OF LA 395, Jefferson Davis, LA
Built 1985 Load: 40.8 t ADT: 4,262
LA0099
FairOver: I-10
1.0 MI N of US 90, Jefferson Davis, LA
Built 1964 Load: 40.8 t ADT: 1,405
LA0101
FairOver: I-10
1.0 MI N of US 90, Jefferson Davis, LA
Built 1964 Load: 40.8 t ADT: 3,166
I0049
FairOver: ACADIANA RAILWAY
2.23 MI NORTH LA.106, Avoyelles, LA
Built 1986 Load: 40.8 t ADT: 10,352
LA0480
FairOver: SIMS BAYOU
3.7 MI. W OF INT LA3163, Natchitoches, LA
Built 1982 Load: 40.8 t ADT: 913
LA1226
FairOver: BLACK LAKE BAYOU
2.0 MI. N OF INT LA1227, Natchitoches, LA
Built 1981 Load: 40.8 t ADT: 495
I0049
FairOver: BARBUE BAYOU TRIB.
2.47 MI. NORTH OF LA 490, Natchitoches, LA
Built 1984 Load: 40.8 t ADT: 18,305
I0049
FairOver: BARBUE BAYOU TRIB.
2.47 MI. NORTH OF LA 490, Natchitoches, LA
Built 1984 Load: 40.8 t ADT: 28,142
I0049
FairOver: COMITTE BAYOU
1.04 MI. SOUTH OF LA 119, Natchitoches, LA
Built 1984 Load: 40.8 t ADT: 28,142
I0049
FairOver: THOMPSON CREEK
0.16 MI. NORTH OF LA 174, Natchitoches, LA
Built 1985 Load: 40.8 t ADT: 16,334
LA0504
FairOver: RIO-HONDO-CREEK
3.46 MI. N OF INT LA6, Natchitoches, LA
Built 1979 Load: 40.8 t ADT: 1,737
US0165
FairOver: BAYOU BOEUF
3.86 MI. NORTH OF LA 3265, Rapides, LA
Built 1993 Load: 40.8 t ADT: 8,811
US0165
FairOver: DIVERSION CANAL
5.87 MI. NORTH OF LA 3265, Rapides, LA
Built 1993 Load: 40.8 t ADT: 4,850
US0167
FairOver: US 165
US 167 / US 165 INTG., Rapides, LA
Built 1970 Load: 40.8 t ADT: 29,768
US0167
FairOver: US 165
US 167 / US 165 INTG., Rapides, LA
Built 1970 Load: 40.8 t ADT: 27,628
LA0181
FairOver: DIVERSION CANAL
0.10 MI SOUTH OF I-49, Rapides, LA
Built 1985 Load: 40.8 t ADT: 739
LA0181
FairOver: DIVERSION CANAL
0.10 MI SOUTH OF I-49, Rapides, LA
Built 1985 Load: 40.8 t ADT: 1,624
I0049
FairOver: COPENHAGEN SLOUGH
5.33 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 40.8 t ADT: 11,969
I0049
FairOver: GENE BALL DR. B. ROBERT
6.01 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 40.8 t ADT: 24,080
I0049
FairOver: GENE BALL DR. B. ROBERT
6.01 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 40.8 t ADT: 11,969
LA0506
FairOver: CREEK
.5 MI W OF US 165, Caldwell, LA
Built 1996 Load: 40.8 t ADT: 306
LA0044
FairOver: BAYOU NARCISSE
700 FT. N. JCT. US 61, Ascension, LA
Built 1985 Load: 40.8 t ADT: 17,577
LA0044
FairOver: BAYOU CALBASSE
500 FT. S. JCT. LA 621, Ascension, LA
Built 1985 Load: 40.8 t ADT: 17,577
LA0022
FairOver: BAYOU CONWAY
0.1 M NORTH I-10 & LA 22, Ascension, LA
Built 1990 Load: 40.8 t ADT: 17,134
LA0070
FairOver: BAYOU VERRETTE
0.2 M E of LA 70&LA 3120, Ascension, LA
Built 1964 Load: 40.8 t ADT: 15,589
I0010
FairOver: LA 73
4.7 Mi. W. of LA 30, Ascension, LA
Built 1975 Load: 40.8 t ADT: 25,735
I0010
FairOver: ON RP FR S US61 TO E I10
0.08 M S of I-10&US 61, Ascension, LA
Built 1975 Load: 40.8 t ADT: 8,115
LA0070
FairOver: DRAIN
2.0 M NE of LA 1&LA 70, Assumption, LA
Built 1973 Load: 40.8 t ADT: 3,881
LA0070
FairOver: DRAIN
2.0 M NE of LA 1&LA 70, Assumption, LA
Built 1972 Load: 40.8 t ADT: 6,289
I0010
FairOver: I-10 RAMP
0.3 M E of LA 975, Iberville, LA
Built 1972 Load: 40.8 t ADT: 108
US0061
FairOver: RELIEF BRIDGE US 61
US 61 WEST FELICIANA, West Feliciana, LA
Built 1987 Load: 40.8 t ADT: 2,531
LA1036
FairOver: BEAR CREEK
1.1 M N OF LA 442, Livingston, LA
Built 1980 Load: 40.8 t ADT: 601
LA1036
FairOver: SPRING BRANCH
1.0 M SW OF LA 1041, St. Helena, LA
Built 1980 Load: 40.8 t ADT: 601
LA0435
FairOver: DOUBLE CREEK BRIDGE
3.7 M W OF LA 41, St. Tammany, LA
Built 1981 Load: 40.8 t ADT: 1,121
I0012
FairOver: I-12 OVER I-59 SB
I0012, St. Tammany, LA
Built 1970 Load: 40.8 t ADT: 29,236
Showing 5,301-5,350 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.