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
LA0006
GoodOver: TOLEDO BEND LAKE
1.7 MI WEST OF LA 191, Sabine, LA
Built 1968 Load: 32.7 t ADT: 3,030
LA0008
GoodOver: CREEK
5.42 MI. E OF E JCT. LA 4, Vernon, LA
Built 2012 Load: 32.7 t ADT: 5,978
US0165-N
GoodOver: BALLARD BAYOU
0.9 Mi S of LA1182, Caldwell, LA
Built 2007 Load: 32.7 t ADT: 12,669
Childress Rd
GoodOver: BEAUCOUP CREEK
2M E of LA 506, Caldwell, LA
Built 2011 Load: 32.7 t ADT: 100
LA0126
GoodOver: CREEK
.1 MI N OF LA 851, Caldwell, LA
Built 1999 Load: 32.7 t ADT: 1,092
US0084
GoodOver: CROSS BAYOU
2.6 MI EAST OF LA 566, Concordia, LA
Built 1977 Load: 32.7 t ADT: 6,163
Burke Rd
GoodOver: BULLS BAYOU
LOG MI. 0.30 FROM 645 TO, Franklin, LA
Built 2010 Load: 32.7 t ADT: 25
Union Church Rd
GoodOver: TURKEY CREEK
4.53 MI. W OF LA 132, Franklin, LA
Built 2004 Load: 32.7 t ADT: 500
Pleasant Ridge Rd
GoodOver: PLEASANT RIDGE
LOG MI 3.63 FR 636 TO 638, LaSalle, LA
Built 2010 Load: 32.7 t ADT: 75
US0084
GoodOver: BAYOU FUNNY LOUIS
3.0 MI EAST OF LA 3159, LaSalle, LA
Built 1983 Load: 32.7 t ADT: 1,675
LA0125
GoodOver: CHICKASAW CREEK
2.3 MI NORTH OF US 84, LaSalle, LA
Built 1981 Load: 32.7 t ADT: 156
LA0460
GoodOver: HEMPHILL CREEK
0.60 M E of LA 127, LaSalle, LA
Built 1988 Load: 32.7 t ADT: 776
LA0605
GoodOver: DERUSSY BAYOU
1.87 MILES FROM THE JUNCT, Tensas, LA
Built 2006 Load: 32.7 t ADT: 236
S Hodgeson Rd
GoodOver: BAYOU CONWAY
0.9 Mi S of LA 30, Ascension, LA
Built 1997 Load: 32.7 t ADT: 150
Aymond Rd
GoodOver: NEW RIVER
2.5 MI NE OF SORRENTO, Ascension, LA
Built 1998 Load: 32.7 t ADT: 25
South Irma Blvd
GoodOver: BAYOU FRANCOIS
0.5 Mi N of LA 939, Ascension, LA
Built 2003 Load: 32.7 t ADT: 1,200
South Irma Blvd
GoodOver: BAYOU FRANCOIS
0.5 Mi N of LA 939, Ascension, LA
Built 2003 Load: 32.7 t ADT: 1,200
I0012
GoodOver: LA 3245 ONEAL LANE
I-12 OVER LA 3245 ONEAL L, East Baton Rouge, LA
Built 2012 Load: 32.7 t ADT: 28,013
I0010
GoodOver: WASH.ST. ON RAMP
I0010, East Baton Rouge, LA
Built 1963 Load: 32.7 t ADT: 8,250
I0110
GoodOver: US190/US61
0.3 M S of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 79,455
I0110
GoodOver: US190/US61
0.08 M SE of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 8,250
I0110
GoodOver: RAMP US 190 E TO I-110 S
0.08 M SW of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 8,250
I0110
GoodOver: I-110;US 190;0PS
0.1 M SW of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 8,250
I0110
GoodOver: RAMP AIRLINE HWY-I-110 N
0.08 M NE of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 8,250
I0110
GoodOver: Monte Sano Ave.
0.8 Mi S. of LA 408, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 16,229
I0110
GoodOver: I 110 US190 0PS
0.1 M E of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 8,250
I0110
GoodOver: I-110
0.6 M N of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 8,250
I0110
GoodOver: I-110
0.5 M N of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 32.7 t ADT: 8,250
I0012
GoodOver: JEFFERSON HWY & WARDS CR
I-12 WB @ JEFFERSON HWY., East Baton Rouge, LA
Built 1999 Load: 32.7 t ADT: 32,092
Corporate Blvd
GoodOver: WARDS CREEK
.20 MILES E. COLLEGE DR., East Baton Rouge, LA
Built 1985 Load: 32.7 t ADT: 23,372
Alexander Ave
GoodOver: MONTE SANO BAYOU
0.7 M W of LA 67, East Baton Rouge, LA
Built 1985 Load: 32.7 t ADT: 200
LA0068
GoodOver: CARNEY CREEK
0.4 Mi. N of LA 963, East Feliciana, LA
Built 2011 Load: 32.7 t ADT: 680
US0061
GoodOver: SANDY CREEK
US 61, East Feliciana, LA
Built 1982 Load: 32.7 t ADT: 2,531
LA3125
GoodOver: PIPELINE CROSSING
0.6 M E of LA 70, St. James, LA
Built 1980 Load: 32.7 t ADT: 10,807
I0010
GoodOver: LA 641 OVER I-10
3.4 M N of US 61, St. James, LA
Built 1981 Load: 32.7 t ADT: 6,427
LA0066
GoodOver: SIKE BRANCH CREEK
3.1 MILES WEST OF LA 969, West Feliciana, LA
Built 2009 Load: 32.7 t ADT: 1,417
LA0066
GoodOver: TUNICA BAYOU
TUNICA LA 66, West Feliciana, LA
Built 1988 Load: 32.7 t ADT: 1,677
LA0421
GoodOver: WEST FORK TOMPSON CREEK
APPROX. 4.6 MILES EAST OF, West Feliciana, LA
Built 2007 Load: 32.7 t ADT: 739
LA0442
GoodOver: E HOG BRANCH
LA0442, Livingston, LA
Built 1968 Load: 32.7 t ADT: 860
LA0442
GoodOver: CANEY BRANCH
0.3 M W OF LA 441, Livingston, LA
Built 1968 Load: 32.7 t ADT: 860
SATSUMA Rd
GoodOver: I-12
2.7 M W OF LA 63, Livingston, LA
Built 1970 Load: 32.7 t ADT: 5,050
I0012
GoodOver: I-12 OVER US 11
I0012, St. Tammany, LA
Built 1970 Load: 32.7 t ADT: 29,236
E. W.moreland Rd
GoodOver: BUTTON CREEK
1.4 MILES SOUTHWEST OF LA, Tangipahoa, LA
Built 2011 Load: 32.7 t ADT: 125
LA0445
GoodOver: POLE BRIDGE BRANCH
1.61 MI.N OF US 190, Tangipahoa, LA
Built 2017 Load: 32.7 t ADT: 8,876
US0051
GoodOver: US 51 OVER I-55
US051, Tangipahoa, LA
Built 1970 Load: 32.7 t ADT: 15,642
I0055
GoodOver: MANCHAC INT/SERVICE RD
11.0 M S OF LA 22, Tangipahoa, LA
Built 1979 Load: 32.7 t ADT: 17,665
LA0443
GoodOver: CREEK
6.97 MILES N OF US 190, Tangipahoa, LA
Built 2004 Load: 32.7 t ADT: 6,478
Monroe Cr. Rd
GoodOver: CREEK
5.1 MILES WEST OF LA 21, Washington, LA
Built 2014 Load: 32.7 t ADT: 492
Hilltop church Rd
GoodOver: JAMERSON CREEK
9 MILES WEST OF LA 21, Washington, LA
Built 2011 Load: 32.7 t ADT: 327
Martin Rd
GoodOver: SNELL BRANCH
2.7 MILES NORTH OF LA 38, Washington, LA
Built 2011 Load: 32.7 t ADT: 310
Showing 8,401-8,450 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.