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
Brian Rd
PoorOver: DRAINAGE BAYOU
3.3 MI N JCT LA.64 L, East Baton Rouge, LA
Built 1965 Load: 12.6 t ADT: 86
W Esplanade Ave S
PoorOver: CANAL NO. 17
0.1 MI W. OF TULANE DR., Jefferson, LA
Built 1960 Load: 12.7 t
LA0010
PoorOver: BAYOU HA HA
1.7 Miles West of LA 105, St. Landry, LA
Built 1958 Load: 13.0 t ADT: 708
Phillip St.
PoorOver: BAYOU YARBOR
0.2 Mi E of Brown St, St. Landry, LA
Built 1960 Load: 13.0 t ADT: 200
LA0160
PoorOver: CYPRESS BAYOU
.73 MI EAST OF LA 3, Bossier, LA
Built 1969 Load: 13.0 t ADT: 622
I0020
PoorOver: STL&SW-KCS RR/WESTERFIEL
1.04 MI EAST LA 1, Bossier, LA
Built 1966 Load: 13.0 t ADT: 45,300
LA0525
PoorOver: BOGGY BAYOU
3.0 MI WEST OF US 71, Caddo, LA
Built 1969 Load: 13.0 t ADT: 4,294
LA0514
PoorOver: BAYOU CHICOT
1.8 MI EAST OF US 71, Red River, LA
Built 1970 Load: 13.0 t ADT: 772
LA0132
PoorOver: LITTLE CREEK
4.0 MI EAST OF LA 135, Richland, LA
Built 1972 Load: 13.0 t ADT: 1,913
LA0582
PoorOver: CREEK
2.5 MI SOUTH OF LA 2, West Carroll, LA
Built 1956 Load: 13.0 t ADT: 355
LA3063
PoorOver: DRAINAGE DITCH
0.1 MI S of US 90, Calcasieu, LA
Built 1968 Load: 13.0 t ADT: 1,918
FDR 287
PoorOver: BRANCH CREEK
NATIONAL FOREST ROAD, Rapides, LA
Built 1963 Load: 13.0 t ADT: 60
LA1231-1
PoorOver: CREOSOTE BRANCH
.44 MI WEST OF US 167, Winn, LA
Built 1968 Load: 13.0 t ADT: 569
LA0308
PoorOver: BELLE TERRE CANAL
0.5 Mi. S. of LA 943, Ascension, LA
Built 1963 Load: 13.0 t ADT: 1,349
LA1010
PoorOver: LABADIEVILLE DRAIN 2
0.7 Mi. N of LA 398, Assumption, LA
Built 1980 Load: 13.0 t ADT: 111
E Achord Rd
PoorOver: DRAINAGE BAYOU
3.0 M E of LA 73, East Baton Rouge, LA
Built 1975 Load: 13.0 t ADT: 1,732
LA0001
PoorOver: LATERAL W15#7A
2.35 M S of LA 417, Pointe Coupee, LA
Built 1957 Load: 13.0 t ADT: 3,289
US0090
PoorOver: MIDDLE MIDDLE PEARL RIVE
2.4 miles east of US 190, St. Tammany, LA
Built 1933 Load: 13.0 t ADT: 1,215
US0090
PoorOver: E MIDDLE PEARL RIVER
3 miles east of US 190, St. Tammany, LA
Built 1933 Load: 13.0 t ADT: 1,215
LA0022
PoorOver: TANGIPAHOA RIVER
LA0022, Tangipahoa, LA
Built 1939 Load: 13.0 t ADT: 6,435
Bennett Rd
PoorOver: CREEK
1 MI NW OF SR 40 EXI, Tangipahoa, LA
Built 1975 Load: 13.0 t ADT: 2,750
Stateline Rd
PoorOver: CREEK
4.1 MI NW OF JCT 51&, Tangipahoa, LA
Built 1960 Load: 13.0 t ADT: 40
W. Metairie Ave
PoorOver: SONIAT CANAL
.1MI.W.OF DAVID DRIV, Jefferson, LA
Built 1960 Load: 13.3 t
LA0316
PoorOver: ST LOUIS CANAL
1.8 MI NORTH OF LA 182, Lafourche, LA
Built 1972 Load: 13.3 t ADT: 1,292
LA0648
PoorOver: DRAIN CANAL
.62 MI EAST OF LA 648, Lafourche, LA
Built 1959 Load: 13.3 t ADT: 9,183
Dumaine St.
PoorOver: BAYOU SAINT JOHN
0.0MI.W.OF MOSS, Orleans, LA
Built 1951 Load: 13.3 t
LA0082
PoorOver: MILLER CANAL
10.21 Mi S of LA 3147, Vermilion, LA
Built 1958 Load: 13.3 t ADT: 2,899
LA0501
PoorOver: DRAIN
.01 MI NORTH OF LA 4, Bienville, LA
Built 1960 Load: 13.3 t ADT: 218
I0020
PoorOver: LK SHORE DR&KESRR
.5 MI EAST OF US 80, Caddo, LA
Built 1965 Load: 13.3 t ADT: 98,318
LA0561
PoorOver: BOEUF RIVER
11.0 MI SOUTH OF LA 132, Richland, LA
Built 1952 Load: 13.3 t ADT: 1,543
LA0372
PoorOver: CREEK
6.7 MI S OF LA 10, Allen, LA
Built 1962 Load: 13.3 t ADT: 435
Manchac Acres Rd.
PoorOver: Cotton Bayou
1.3 MI N of LA 42, Ascension, LA
Built 1970 Load: 13.3 t ADT: 75
Telesmar Ave
PoorOver: CLAY CUT BAYOU
1.8 MI SE I-12 US61, East Baton Rouge, LA
Built 1970 Load: 13.3 t ADT: 150
Angus Ave
PoorOver: DRAINAGE CANAL
0.2 Mi W. of LA 67, East Baton Rouge, LA
Built 1966 Load: 13.3 t ADT: 722
LA0955
PoorOver: Monahan Bayou
1.8 M S of LA 10&LA 955, East Feliciana, LA
Built 1966 Load: 13.3 t ADT: 989
LA0308
PoorOver: VALENTINE CANAL
6.3 MI NORTH OF LA 657, Lafourche, LA
Built 1964 Load: 13.6 t ADT: 8,181
Sidney Leblanc Rd
PoorOver: Coulee
0.01 MILE E OF LA 83, Iberia, LA
Built 1986 Load: 13.6 t ADT: 293
Serenity Rd.
PoorOver: COULEE
0.3 Mi. West of Bonin Rd, Lafayette, LA
Built 1972 Load: 13.6 t ADT: 40
LA0808
PoorOver: INDIAN CREEK
2.5 MI EAST OF LA 521, Claiborne, LA
Built 1949 Load: 13.6 t ADT: 123
US0371
PoorOver: ICG RR @ SIBLEY
.1 MI SOUTH OF LA 164, Webster, LA
Built 1935 Load: 13.6 t ADT: 6,469
LA0159
PoorOver: LEONARD BRANCH
.7 MI NORTH OF LA 615, Webster, LA
Built 1966 Load: 13.6 t ADT: 1,754
LA0531
PoorOver: I-20
LA 531 OVER I-20, Webster, LA
Built 1960 Load: 13.6 t ADT: 1,689
LA0544
PoorOver: CYPRESS CREEK
2.0 MI NORTH OF I-20, Lincoln, LA
Built 1961 Load: 13.6 t ADT: 11,636
CCC RD
PoorOver: MADDEN CREEK
5 MILES S SIMSBORO, Lincoln, LA
Built 1978 Load: 13.6 t ADT: 99
LA0577
PoorOver: JOES BAYOU
1.6 MI NORTH OF LA 577, Madison, LA
Built 1969 Load: 13.6 t ADT: 161
LA0584
PoorOver: LITTLE CREEK
2.5 MI EAST OF LA 135, Richland, LA
Built 1961 Load: 13.6 t ADT: 77
LA0586
PoorOver: TIGER BAYOU
4.3 MI EAST OF LA 583, West Carroll, LA
Built 1959 Load: 13.6 t ADT: 242
TOM QUAVE RD
PoorOver: CHERRYWINCHE CREEK
0.7 MI E of SAM CLOUD RD, Allen, LA
Built 1983 Load: 13.6 t ADT: 10
Katie Rd
PoorOver: DRAINAGE DITCH
0.25 MI. SOUTH OF LA 1181, Avoyelles, LA
Built 1965 Load: 13.6 t ADT: 100
LA0487
PoorOver: BRUSHY BAYOU
7.7 MI. N OF LA120, Natchitoches, LA
Built 1975 Load: 13.6 t ADT: 968
Showing 11,651-11,700 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.