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
Auto Plex Dr
PoorOver: CLAYCUT BAYOU
.01 MI SOUTH OF AIRLINE, East Baton Rouge, LA
Built 1978 Load: 14.3 t ADT: 389
Connell Village Ln
PoorOver: N. BRANCH WARDS CREEK
0.10 MI W OF AIRLINE HWY, East Baton Rouge, LA
Built 1988 Load: 14.3 t ADT: 6,180
Milldale Rd
PoorOver: DRAINAGE CANAL
2.0 M W OF LA 409, East Baton Rouge, LA
Built 1959 Load: 14.3 t ADT: 377
Milldale Rd
PoorOver: DRAINAGE BAYOU
2.6 MI SOUTHWEST OF, East Baton Rouge, LA
Built 1959 Load: 14.3 t ADT: 377
LA3066
PoorOver: CENTENNIAL CANAL
2.5 M SW of LA 1&LA 3066, Iberville, LA
Built 1968 Load: 14.3 t ADT: 2,052
LA1054
PoorOver: TYNER CREEK
4.4 Mi N. of LA 40, Tangipahoa, LA
Built 1967 Load: 14.3 t ADT: 1,063
LA0062
PoorOver: CRAINS CREEK
LA0062, Washington, LA
Built 1959 Load: 14.3 t ADT: 1,205
LA1074
PoorOver: SALS BRANCH
0.7 M W OF LA 1075, Washington, LA
Built 1958 Load: 14.3 t ADT: 1,186
Deer Park Rd
PoorOver: COULEE
0.6 Mi W. of La 98, Acadia, LA
Built 1998 Load: 14.5 t ADT: 48
LA0082
PoorOver: CREEK
1.97 MI N. OF LA 14, Vermilion, LA
Built 1960 Load: 14.5 t ADT: 2,899
Swan Lake Rd
PoorOver: Red Chute Bayou
0.7 M EAST OF POOLE ROAD, Bossier, LA
Built 1989 Load: 14.5 t ADT: 20
Winfield Rd
PoorOver: Fifi Bayou
3.4M WEST OF LA 157, Bossier, LA
Built 1993 Load: 14.5 t ADT: 380
W.Dale Plantation
PoorOver: B. PIERRE PH RD 402
3.0 MI W OF LA1, Red River, LA
Built 1963 Load: 14.5 t ADT: 12
LA0146
PoorOver: CREEK
.5 MI SOUTH OF LA 145, Jackson, LA
Built 1951 Load: 14.5 t ADT: 882
LA0135
PoorOver: LITTLE CREEK
.5 MI NORTH OF LA 132, Richland, LA
Built 1962 Load: 14.5 t ADT: 1,260
LA0583
PoorOver: BEE BAYOU
.1 MI SOUTH OF US 80, Richland, LA
Built 1954 Load: 14.5 t ADT: 1,108
Normand Rd
PoorOver: DRAINAGE DITCH
1.24 MI. N. OF LARGE RD., Avoyelles, LA
Built 1983 Load: 14.5 t ADT: 90
Forest Rd
PoorOver: LYLES CREEK
2.9 MILES NW OF LA 118, Natchitoches, LA
Built 1970 Load: 14.5 t ADT: 32
LA0463
PoorOver: TEN MILE CREEK
10.99 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 14.5 t ADT: 482
LA0126
PoorOver: BRIDGE CREEK
0.5 MILES SOUTH OF JCT. L, Caldwell, LA
Built 1953 Load: 14.5 t ADT: 1,092
LA0506
PoorOver: BANISTER CREEK
6.6 MI WEST OF US 165, Caldwell, LA
Built 1971 Load: 14.5 t ADT: 306
Boyd Rd
PoorOver: HURRICANE CREEK
2.2 MILES NW OF LA 19, East Feliciana, LA
Built 1980 Load: 14.5 t ADT: 6
Stein Rd
PoorOver: YELLOW WATER RIVER
0.8 MI N OF LA 1040, Tangipahoa, LA
Built 1960 Load: 14.5 t ADT: 4
Old Genessee Rd
PoorOver: CREEK
3 MI SE OF LA RT 442, Tangipahoa, LA
Built 1960 Load: 14.5 t ADT: 406
V. Lambert Rd
PoorOver: CREEK
3 MI NE OF JCT 1061, Tangipahoa, LA
Built 1975 Load: 14.5 t ADT: 97
Hudson St
PoorOver: COBURN CREEK
.1 MI. N OF HWY. 10, Washington, LA
Built 1970 Load: 14.5 t ADT: 703
LA0182
PoorOver: BAYOU TERREBONNE
0.1 MI EAST OF LA 24 WEST, Terrebonne, LA
Built 1954 Load: 14.6 t ADT: 3,687
LA0182
PoorOver: BAYOU TERREBONNE
.1 MI EAST OF LA 24 WEST, Terrebonne, LA
Built 1968 Load: 14.6 t ADT: 9,001
I0010
PoorOver: RAMP B. OFF RAMP
5.66 MI W of LA 975, St. Martin, LA
Built 1971 Load: 14.6 t ADT: 970
LA0161
PoorOver: LITTLE CORNEY BAYOU
3.82 MI EAST OF LA 2 ALT, Claiborne, LA
Built 1980 Load: 14.6 t ADT: 836
LA0159
PoorOver: CYPRESS CREEK
3.6 MI NORTH OF LA 615, Webster, LA
Built 1966 Load: 14.6 t ADT: 866
VIDRINE RD.
PoorOver: BAYOU
0.5 MI N of US 165, Jefferson Davis, LA
Built 1970 Load: 14.6 t ADT: 60
Shady Grove Rd
PoorOver: MIDDLE CREEK
1.25 MI. EAST OF LA 117, Natchitoches, LA
Built 1983 Load: 14.6 t ADT: 92
Brandon Cotton Rd
PoorOver: TERRE BLANC BAYOU
0.73 M. W. OF LA 485, Natchitoches, LA
Built 1981 Load: 14.6 t ADT: 92
LA0073
PoorOver: BAYOU MANCHAC
0.68 MI N OF LA 427, East Baton Rouge, LA
Built 1931 Load: 14.6 t ADT: 9,615
LA0963
PoorOver: LITTLE REDWOOD CR
0.07 M W of LA 963, East Feliciana, LA
Built 1958 Load: 14.6 t ADT: 905
LA0037
PoorOver: CREEK
0.2 M SW OF LA 10, St. Helena, LA
Built 1960 Load: 14.6 t ADT: 2,894
Charlie Arceneaux
PoorOver: Wikoff Bayou
1.54 MI EAST OF LA 35, Acadia, LA
Built 2011 Load: 14.7 t ADT: 48
LA0126
PoorOver: LITTLE KIESCHE CREEK
2.62 MI. EAST OF US 167, Winn, LA
Built 1974 Load: 14.7 t ADT: 687
E. Lewiston Rd
PoorOver: WILSON BRANCH
3.7 MI NE OF JCT 38, Tangipahoa, LA
Built 1970 Load: 14.7 t ADT: 55
Penton road
PoorOver: MILE BR.
0.3 MI. N. OF HWY. 4, Washington, LA
Built 1970 Load: 14.7 t ADT: 3,200
SOUTH ST
PoorOver: COULEE
0.004 MI W OF DEADWOOD RD, Terrebonne, LA
Built 1960 Load: 14.8 t ADT: 135
Nursery Rd
PoorOver: BRUSHY CREEK
0.8 MI SW OF HWY 531, Webster, LA
Built 1978 Load: 14.8 t ADT: 928
RUFFIN DR
PoorOver: PINE BAYOU
0.4 Mi. EAST of US 165, Ouachita, LA
Built 1972 Load: 14.8 t ADT: 300
Bobby Gaspard Xing
PoorOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1987 Load: 14.8 t ADT: 100
Milton Rd
PoorOver: BEAVER BRANCH
3.7 MI NW OF EXIT 44, Livingston, LA
Built 1975 Load: 14.8 t ADT: 300
Auguillard Rd
PoorOver: COULEE
0.2 Mi. N. of La 347, St. Martin, LA
Built 1975 Load: 14.9 t ADT: 40
LA0789
PoorOver: SPRING BRANCH
3.35 MI SOUTH OF LA 169, Caddo, LA
Built 1971 Load: 14.9 t ADT: 1,504
LA0521
PoorOver: LITTLE INDIAN CREEK
5.2 MI NORTH OF LA 2, Claiborne, LA
Built 1973 Load: 14.9 t ADT: 409
LA0159
PoorOver: CANEY CREEK
4.39 MI NORTH OF LA 79, Webster, LA
Built 1970 Load: 14.9 t ADT: 1,645
Showing 11,751-11,800 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.