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
I0020
FairOver: RAMP J-2
0.2 MI E OF LA 1, Bossier, LA
Built 1965 Load: 30.8 t ADT: 71,593
I0020
FairOver: RED RIVER
.01 MI EAST LA 1, Bossier, LA
Built 1965 Load: 30.8 t ADT: 69,892
I0020
FairOver: RAMP J-2
0.2 MI EAST LA 1, Bossier, LA
Built 1965 Load: 30.8 t ADT: 69,892
I0020
FairOver: HAMILTON MILLS ROAD
.80 MI EAST LA 1, Bossier, LA
Built 1966 Load: 30.8 t ADT: 69,892
I0020
FairOver: HAMILTON MILLS ROAD
.80 MI EAST LA 1, Bossier, LA
Built 1966 Load: 30.8 t ADT: 71,593
I0020
FairOver: ICG RR
.5 MI EAST OVER LA 72, Bossier, LA
Built 1967 Load: 30.8 t ADT: 69,892
I0020
FairOver: RED CHUTE BAYOU
3.3 MI EAST OF LA 782-2, Bossier, LA
Built 1973 Load: 30.8 t ADT: 62,470
I0020
FairOver: ON RAMP TO I-20 WBL
I-220 RAMPS OVER I-20, Caddo, LA
Built 1980 Load: 30.8 t ADT: 87,567
I0020
FairOver: MARION ST
.2 MI EAST OF US 80, Caddo, LA
Built 1965 Load: 30.8 t ADT: 98,318
I0020
FairOver: LINE AVE
1.1 MI W. OF LA 1, Caddo, LA
Built 1966 Load: 30.8 t ADT: 98,318
CLYDE FANT PKWY SB
FairOver: PRESTON AVE
0.75 MI SOUTH OF LA 3032, Caddo, LA
Built 1987 Load: 30.8 t ADT: 11,190
LINEAR STREET
FairOver: COOPER ROAD DITCH
1.2 MI EAST OF LA 173, Caddo, LA
Built 1987 Load: 30.8 t ADT: 600
LA3248
FairOver: CREEK
1.61 MILES SOUTH OF THE E, De Soto, LA
Built 2012 Load: 30.8 t ADT: 42
LA1255
FairOver: CRIP RAILROAD
4.8 MI NORTH OF LA 505, Jackson, LA
Built 1977 Load: 30.8 t ADT: 12,847
I0020
FairOver: DRAINAGE
2.8 MI WEST OF LA 577, Madison, LA
Built 1971 Load: 30.8 t ADT: 31,481
I0020
FairOver: DRAINAGE
2.8 MI WEST OF LA 577, Madison, LA
Built 1971 Load: 30.8 t ADT: 31,481
LA0546
FairOver: INTG I-20
LA 546 OVER I-20, Ouachita, LA
Built 2008 Load: 30.8 t ADT: 7,892
I0020
FairOver: I-20 OVER US 165
I-20 OVER US 165, Ouachita, LA
Built 1965 Load: 30.8 t ADT: 66,061
GARRETT RD
FairOver: I-20
1.7 MI EAST OF US 165, Ouachita, LA
Built 1968 Load: 30.8 t ADT: 3,950
CENTRAL ST
FairOver: BLACK BAYOU
WEST MONROE, Ouachita, LA
Built 1982 Load: 30.8 t ADT: 250
DESIARD ST
FairOver: YOUNGS BAYOU
DESIARD ST. MONROE L, Ouachita, LA
Built 1961 Load: 30.8 t ADT: 10,000
MENGEL RD
FairOver: I-20
1.7 MI EAST OF LA 583, Richland, LA
Built 1969 Load: 30.8 t ADT: 2,730
LA0109
FairOver: INDIAN CREEK
3.0 MI. S OF INT LA389, Beauregard, LA
Built 1962 Load: 30.8 t ADT: 1,749
LA0108
FairOver: COON GULLY
.65 MI SOUTH OF I-10, Calcasieu, LA
Built 2006 Load: 30.8 t ADT: 762
I0210
FairOver: HOLLYHILL RD
.5 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1964 Load: 30.8 t ADT: 65,748
I0010
FairOver: LA 385
I-10 OVER LA 385, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 73,488
I0010
FairOver: LA 385
I-10 OVER LA 385, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 11,437
I0010
FairOver: OPELOUSAS ST
0.7 MI EAST OF US 90, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 71,437
I0010
FairOver: OPELOUSAS ST
0.6 MI W of US 171, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 11,437
GOODMAN RD
FairOver: I-10
0.2 MI OF LA 3020, Calcasieu, LA
Built 1977 Load: 30.8 t ADT: 1,400
FORD ST
FairOver: FARMERS L & C CO. CANAL
0.03 MI N of 8TH ST, Calcasieu, LA
Built 1928 Load: 30.8 t ADT: 112
MOSS ST
FairOver: FARMERS L & C CO. CANAL
0.006 MI N of 8TH ST, Calcasieu, LA
Built 1960 Load: 30.8 t ADT: 294
6TH ST
FairOver: FARMERS L & C CO. CANAL
0.2 MI E of LA 385, Calcasieu, LA
Built 1960 Load: 30.8 t ADT: 431
US0165
FairOver: INDIAN CREEK
4.6 MI NORTH OF LA 123, Grant, LA
Built 1939 Load: 30.8 t ADT: 1,898
US0165
FairOver: INDIAN CREEK RELIEF
5.0 MI NORTH OF LA 123, Grant, LA
Built 1939 Load: 30.8 t ADT: 1,898
US0165
FairOver: BEAR CREEK
5.6 MI NORTH OF LA 123, Grant, LA
Built 1939 Load: 30.8 t ADT: 1,898
LA0174
FairOver: I-49
I-49 /LA 174 INTERCHANGE, Natchitoches, LA
Built 1985 Load: 30.8 t ADT: 760
LA1226
FairOver: CLEAR LAKE
2.67 MI. N OF INT US84, Natchitoches, LA
Built 1995 Load: 30.8 t ADT: 495
LA0454
FairOver: WIGGINS BAYOU
2.33 MI. SOUTH OF LA 107, Rapides, LA
Built 1947 Load: 30.8 t ADT: 226
LA0454
FairOver: WIGGINS BAYOU RELIEF
1.05 MI. SOUTH OF LA 107, Rapides, LA
Built 1947 Load: 30.8 t ADT: 226
North Bayou Rd
FairOver: BAYOU RAPIDES
0.04 M. N. OF E. JCT. LA, Rapides, LA
Built 1995 Load: 30.8 t ADT: 227
LA0191
FairOver: TURNER CREEK
2.5 MI NORTH OF LA 476, Sabine, LA
Built 1976 Load: 30.8 t ADT: 1,566
LA0133
FairOver: BAYOU LAFOURCHE CUT OFF
3.85 MI NORTH OF LA 4, Caldwell, LA
Built 1951 Load: 30.8 t ADT: 1,415
LA0008
FairOver: BAYOU LOUIS
2.34 M E of LA 922, Catahoula, LA
Built 1989 Load: 30.8 t ADT: 1,394
LA0126
FairOver: HAWTHORNE CREEK
0.69 M N of LA 8, Catahoula, LA
Built 1983 Load: 30.8 t ADT: 544
Apple Street
FairOver: VIDALIA CANAL
0.04 MI N of Peach Street, Concordia, LA
Built 1970 Load: 30.8 t ADT: 200
LA0042
FairOver: BAYOU VILLAR
0.09 M SE of LA 42&LA 431, Ascension, LA
Built 1984 Load: 30.8 t ADT: 13,122
I0110
FairOver: NORTH ST.
I-110 / MAIN ST. INTG., East Baton Rouge, LA
Built 1963 Load: 30.8 t ADT: 8,250
Stanford Ave
FairOver: CORPORATION CANAL
1.2 M S OF LA 427, East Baton Rouge, LA
Built 1950 Load: 30.8 t ADT: 23,240
Highland Rd
FairOver: CORPORATION CANAL
49 N OF E MCKINLEY ST, East Baton Rouge, LA
Built 1960 Load: 30.8 t ADT: 12,996
Showing 2,801-2,850 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.