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
US0080
FairOver: STEEP BAYOU
.5 MI EAST OF LA 595, Richland, LA
Built 1953 Load: 36.3 t ADT: 2,747
MOORE RD
FairOver: CREEK
LOGMI 2.51 FR 144 TO, Richland, LA
Built 1984 Load: 36.3 t ADT: 100
US 190
FairOver: SLOUGH
8.6 MI. E OF LA 113, Allen, LA
Built 1976 Load: 36.3 t ADT: 2,958
CARPENTERS BRDG RD
FairOver: PERRY CREEK
7.0 MI N of US 190, Allen, LA
Built 2000 Load: 36.3 t ADT: 100
DESHOTEL RD
FairOver: GUM BRANCH
3.4 MI EAST OF US 165, Allen, LA
Built 1985 Load: 36.3 t ADT: 32
TEN MILE RD
FairOver: TEN MILE CREEK
2.0 MI NORTH OF LA 26, Allen, LA
Built 2008 Load: 36.3 t ADT: 150
NICHOLS SIBLEY RD
FairOver: TROUT CREEK
0.4 MI S of US 190, Beauregard, LA
Built 2005 Load: 36.3 t ADT: 200
I0210
FairOver: PRIEN LAKE ROAD
I-210 OVER LA 1138-2, Calcasieu, LA
Built 1964 Load: 36.3 t ADT: 65,748
I0210
FairOver: PRIEN LAKE ROAD
I-210 OVER LA 1138-2, Calcasieu, LA
Built 1964 Load: 36.3 t ADT: 608
I0210
FairOver: UPRR
.2 MI EAST OF US 90, Calcasieu, LA
Built 1977 Load: 36.3 t ADT: 3,857
CHAISSON ROAD
FairOver: EAST BAYOU LACASSINE
1.51 MI N OF I-10 SER RD, Jefferson Davis, LA
Built 2019 Load: 36.3 t ADT: 16
LA0001
FairOver: KCS RR & DR T DOOS RD
0.14 MI. NORTH OF LA 1186, Avoyelles, LA
Built 1971 Load: 36.3 t ADT: 4,686
LA0115
FairOver: DIVERSION CANAL
1.36 MI. WEST OF LA 1176, Avoyelles, LA
Built 1950 Load: 36.3 t ADT: 1,830
LA0001
FairOver: SIBLEY LAKE
.70 MI N OF JCT LA 6, Natchitoches, LA
Built 1969 Load: 36.3 t ADT: 14,586
LA0490
FairOver: CANE RIVER @ MARCO
1.39 MI. S OF INT 3279, Natchitoches, LA
Built 1985 Load: 36.3 t ADT: 138
Goldonna Rd
FairOver: LITTLE FORDOCHE CREEK
6 M. N. OF END MAINT. LA, Natchitoches, LA
Built 1995 Load: 36.3 t ADT: 233
LA0028
FairOver: HEMPHILL CREEK
8.82 MI. EAST OF LA 465, Rapides, LA
Built 1973 Load: 36.3 t ADT: 7,065
LA0028
FairOver: DIVERSION CANAL
2.18 MI. EAST OF LA 3054, Rapides, LA
Built 1949 Load: 36.3 t ADT: 28,087
I0049
FairOver: I-49 US 167 RAMPS CIT
I-49/US 167 INTG., Rapides, LA
Built 1994 Load: 36.3 t ADT: 33,869
I0049
FairOver: US 167 RAMPS CITY STR.
I-49 / US 167 INTG., Rapides, LA
Built 1995 Load: 36.3 t ADT: 15,642
I0049
FairOver: I49 US167 RAMPS STR.
I-49 / US 167 INTG., Rapides, LA
Built 1994 Load: 36.3 t ADT: 15,642
I0049
FairOver: HWYS STRTS RR BAYOU
0.23 MI. NORTH OF US 167B, Rapides, LA
Built 1994 Load: 36.3 t ADT: 42,770
I0049
FairOver: RAMP RR CITY STS BAYO
NORTH I-49 / US 71 INTG., Rapides, LA
Built 1995 Load: 36.3 t ADT: 15,642
LA0028
FairOver: CYPRESS BAYOU
3.9 MI EAST OF LA 465, Vernon, LA
Built 1973 Load: 36.3 t ADT: 7,065
LA0431
FairOver: LAKE VILLAR
0.92 MI S of LA 42, Ascension, LA
Built 1983 Load: 36.3 t ADT: 9,608
LA0946
FairOver: HURRICANE CREEK
2.04M NORTH OF LA 37, East Baton Rouge, LA
Built 1992 Load: 36.3 t ADT: 11,578
LA0946
FairOver: ROBERTS CANAL
5.46M NORTH OF LA 37, East Baton Rouge, LA
Built 1992 Load: 36.3 t ADT: 11,578
LA0946
FairOver: JONES BAYOU
9.95M NORTH OF LA 37, East Baton Rouge, LA
Built 1992 Load: 36.3 t ADT: 11,578
US0190
FairOver: TICKFAW RIVER
US0190, Livingston, LA
Built 1949 Load: 36.3 t ADT: 7,126
I0055
FairOver: I 55 SOUTH ON RAMP RUDDC
0.1 M W OF US 51, St. John the Baptist, LA
Built 1975 Load: 36.3 t ADT: 8,115
LA3188
FairOver: LA 3188 OVER I-10
2.2 M N OF US 61, St. John the Baptist, LA
Built 1984 Load: 36.3 t ADT: 6,786
I0012
FairOver: I-12 OVER US 51 BUS
I0012, Tangipahoa, LA
Built 1975 Load: 36.3 t ADT: 58,377
US0051-B
FairOver: US 51B OVER I-55
US0051, Tangipahoa, LA
Built 1960 Load: 36.3 t ADT: 2,434
LA0038
FairOver: BOGUE CHITTO
LA0038, Washington, LA
Built 1973 Load: 36.3 t ADT: 1,706
US0065
FairOver: MISSISSIPPI RIVER
.01 MI EAST OF LA 131, Concordia, LA
Built 1989 Load: 36.4 t ADT: 20,933
Leger Rd.
FairOver: Canal
2.5 Mi. N. of La 3007, Acadia, LA
Built 1986 Load: 36.6 t ADT: 288
I0049
FairOver: DRAINAGE CANAL
2.7 Mi. North of LA 29, Evangeline, LA
Built 1986 Load: 36.6 t ADT: 9,875
I0049
FairOver: DRAINAGE CANAL
3.4 MI NORTH OF LA 29, Evangeline, LA
Built 1986 Load: 36.6 t ADT: 19,302
Brangus Rd
FairOver: BEACONS GULLY
0.40 Mi E of La 95, Evangeline, LA
Built 1987 Load: 36.6 t ADT: 154
Burliegh Rd
FairOver: Delahoussaye Canal
1.1 Mi S. of La 182, Iberia, LA
Built 1990 Load: 36.6 t ADT: 56
Coulee Rd
FairOver: Jacks Coulee
1.3 Mi. E. of La 83, Iberia, LA
Built 1985 Load: 36.6 t ADT: 66
Migues Rd
FairOver: Bayou Petite Anse
2.3 Mi. W. Of La 329, Iberia, LA
Built 1984 Load: 36.6 t ADT: 646
Leon Landry Rd
FairOver: Armenco Branch Canal
1.6 Mi. N. of La 675, Iberia, LA
Built 1985 Load: 36.6 t ADT: 56
Landry Rd
FairOver: Armenco Branch Canal
1.0 Mi. NW. of La 674, Iberia, LA
Built 1984 Load: 36.6 t ADT: 289
E Kaliste Saloom
FairOver: COULEE DES POCHES
0.6 SW of US 90, Lafayette, LA
Built 1991 Load: 36.6 t ADT: 12,400
Lake Rd
FairOver: CD & N CANAL
2.53 Mi E of La 87, St. Mary, LA
Built 1984 Load: 36.6 t ADT: 50
Lagrange Rob. Rd
FairOver: YOKELY BAYOU
0.3 Mi W. Chatsworth rd, St. Mary, LA
Built 1984 Load: 36.6 t ADT: 50
Labau St.
FairOver: CHOUPIQUE BAYOU
0.4 Mi. SW of US 90 Front, St. Mary, LA
Built 1984 Load: 36.6 t ADT: 200
Pleasant Rd
FairOver: FOUR MILE BAYOU TRIBUTAR
1.4 MI. N.E. OF LA 4, Bienville, LA
Built 1986 Load: 36.6 t ADT: 70
VALLEY VIEW DR
FairOver: AIRPORT DITCH
0.3 MI. EAST OF U.S., Caddo, LA
Built 1972 Load: 36.6 t ADT: 2,482
Showing 4,301-4,350 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.