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
CORBINA ROAD
GoodOver: KAYOUCHE COULEE
0.3 MI N OF LA 14, Calcasieu, LA
Built 2011 Load: 32.4 t ADT: 1,510
CORBINA ROAD
GoodOver: CALCASIEU RIVER
1.3 MI N LA 14, Calcasieu, LA
Built 2011 Load: 32.4 t ADT: 1,510
US0090
GoodOver: CANAL
6.7 MI EAST OF LA 388, Calcasieu, LA
Built 1968 Load: 32.4 t ADT: 13,695
LA0027
GoodOver: DRAIN
0.1 MI N of LA 397, Calcasieu, LA
Built 1957 Load: 32.4 t ADT: 1,482
LA0014
GoodOver: DRAIN
1.3 MI N OF I-210, Calcasieu, LA
Built 1962 Load: 32.4 t ADT: 8,679
LA0014
GoodOver: CANAL
4.5 MI EAST OF LA 27, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 2,023
I0010
GoodOver: DRAIN
2.3 MI EAST OF LA 108, Calcasieu, LA
Built 1966 Load: 32.4 t ADT: 86,969
I0010
GoodOver: DRAIN
9.3 MI W OF LA 1256, Calcasieu, LA
Built 1966 Load: 32.4 t ADT: 3,799
I0010
GoodOver: DRAIN
3.5 MI EAST OF LA 397, Calcasieu, LA
Built 1964 Load: 32.4 t ADT: 68,113
LA0108
GoodOver: DRAIN
.06 MI EAST OF LA 1256, Calcasieu, LA
Built 1980 Load: 32.4 t ADT: 9,372
ARDOIN COVE ROAD
GoodOver: LATERAL L-4B
0.2 MI E OF LA 101, Jefferson Davis, LA
Built 2004 Load: 32.4 t ADT: 350
LITTERAL ROAD
GoodOver: W.GRAND MARAIS BAYOU
0.7 MI E of LA 395, Jefferson Davis, LA
Built 1987 Load: 32.4 t ADT: 50
MANUEL ROAD
GoodOver: BAYOU SERPENT
2.8 MILES N OF HWY 102, Jefferson Davis, LA
Built 2003 Load: 32.4 t ADT: 150
DAN BULLER ROAD
GoodOver: ROGERS GULLEY
1.0 MI E of LA 26, Jefferson Davis, LA
Built 1987 Load: 32.4 t ADT: 30
Schexnyder Rd
GoodOver: DRAINAGE DITCH
0.2 MI. SOUTH OF NORMAND, Avoyelles, LA
Built 2013 Load: 32.4 t ADT: 267
Johnson Rd
GoodOver: JOHNSON BAYOU
0.08 MI. NORTH OF LA 1192, Avoyelles, LA
Built 2009 Load: 32.4 t ADT: 400
Saint Jean St
GoodOver: BAYOU LACOMBE
0.01 MI. NORTH OF LA 114, Avoyelles, LA
Built 2010 Load: 32.4 t ADT: 70
LA0107
GoodOver: CREEK
1 M NW S END MONCLA BR., Avoyelles, LA
Built 2000 Load: 32.4 t ADT: 3,354
LA0001
GoodOver: BAYOU PEROT
1.71 MI. SOUTH OF LA 1191, Avoyelles, LA
Built 1970 Load: 32.4 t ADT: 10,795
LA0001
GoodOver: BAYOU LACOMBE
6.43 MILES NORTH OF LA 11, Avoyelles, LA
Built 1972 Load: 32.4 t ADT: 6,294
LA1182
GoodOver: BAYOU CHOUPIQUE CANAL
1.5 MI. NE OF LA 107, Avoyelles, LA
Built 1991 Load: 32.4 t ADT: 1,534
LA1192
GoodOver: JOHNSON CANAL
3.63 MI. N OF N JCT LA 10, Avoyelles, LA
Built 2004 Load: 32.4 t ADT: 476
Lanson Bordelon Rd
GoodOver: OLD RIVER
0.1 MI. EAST OF LA 115, Avoyelles, LA
Built 1998 Load: 32.4 t ADT: 20
Scroggs Rd
GoodOver: DRAINAGE CREEK
2 MI NW OF LA 107, Avoyelles, LA
Built 1989 Load: 32.4 t ADT: 300
Air Base Rd
GoodOver: FLAGON CREEK
.29 MILE EAST OF US 167, Grant, LA
Built 2005 Load: 32.4 t ADT: 138
US0071
GoodOver: CREEK
2.4 MI SOUTH OF LA 1241, Grant, LA
Built 1969 Load: 32.4 t ADT: 2,063
US0165
GoodOver: CREEK
1.37 MI NORTH OF LA 3130, Grant, LA
Built 1986 Load: 32.4 t ADT: 6,586
US0165
GoodOver: SUGAR BRANCH
.32 MI NORTH OF LA 8, Grant, LA
Built 1956 Load: 32.4 t ADT: 6,586
US0165
GoodOver: CREEK
2.35 MI. SOUTH OF LA 123, Grant, LA
Built 1948 Load: 32.4 t ADT: 6,586
LA0008
GoodOver: CHANDLER-CREEK
3.78 MI. EAST OF LA 123, Grant, LA
Built 1975 Load: 32.4 t ADT: 2,537
LA0472
GoodOver: CREEK
6.03 MI EAST OF US 167, Grant, LA
Built 1960 Load: 32.4 t ADT: 88
Flagon Creek Rd
GoodOver: FLAGON BAYOU
0.43 M. E. OF JCT US 167, Grant, LA
Built 1986 Load: 32.4 t ADT: 53
Ed Coleman Rd.
GoodOver: COLEMAN CREEK
0.84 M. W. OF JCT ROCK HI, Grant, LA
Built 1997 Load: 32.4 t ADT: 280
Parsonage Rd.
GoodOver: CHANDLER CREEK
4.88 M. NE OF JCT US 167, Grant, LA
Built 1986 Load: 32.4 t ADT: 57
Hughart Rd
GoodOver: HAW CREEK
1.25 M. NW OF LA 8, Grant, LA
Built 1993 Load: 32.4 t ADT: 110
Richardson Rd
GoodOver: GRAPPE BAYOU
0.21 MI. WEST OF US 71, Grant, LA
Built 2007 Load: 32.4 t ADT: 100
Fairfield Rd
GoodOver: 3 BRANCHES CREEK
3.51 M. N. OF JCT LA 8, Grant, LA
Built 1998 Load: 32.4 t ADT: 125
New Bridge Rd
GoodOver: DARTIGO CREEK
1.52 MI. SOUTH OF LA 122, Grant, LA
Built 1998 Load: 32.4 t ADT: 6
LA0478
GoodOver: SLATE BRANCH
2.74 MILES EAST OF LA 120, Natchitoches, LA
Built 2013 Load: 32.4 t ADT: 172
US0071
GoodOver: CREEK
2.01 MI. N OF INT LA6/US8, Natchitoches, LA
Built 1955 Load: 32.4 t ADT: 6,456
US0084
GoodOver: BOURBEAUX BAYOU
3.56 MI. EAST OF US 71, Natchitoches, LA
Built 1987 Load: 32.4 t ADT: 4,081
LA0001
GoodOver: DRY BRANCH CREEK
2.55 MI. N OF INT LA119, Natchitoches, LA
Built 1989 Load: 32.4 t ADT: 996
LA0001
GoodOver: DITCH
2.2 MI. N OF N INT LA119, Natchitoches, LA
Built 1936 Load: 32.4 t ADT: 2,835
LA0009
GoodOver: DRAIN
2.42 MI. N. OF LA 153, Natchitoches, LA
Built 1952 Load: 32.4 t ADT: 1,032
I0049
GoodOver: LIMEKILN BAYOU
1.2 MI. S OF JCT LA 6, Natchitoches, LA
Built 1985 Load: 32.4 t ADT: 18,305
I0049
GoodOver: CREEK
5.21 MI. NORTH OF LA 6, Natchitoches, LA
Built 1984 Load: 32.4 t ADT: 18,305
I0049
GoodOver: MIDDLE BAYOU
7.09 MI. NORTH OF LA 6, Natchitoches, LA
Built 1985 Load: 32.4 t ADT: 18,305
I0049
GoodOver: COW BAYOU
1.1 MI NORTH OF LA 485, Natchitoches, LA
Built 1987 Load: 32.4 t ADT: 16,334
I0049
GoodOver: INDIAN BAYOU
1.07 MI. NORTH OF LA 174, Natchitoches, LA
Built 1985 Load: 32.4 t ADT: 16,334
LA0484
GoodOver: CANE RIVER SPILLWAY
.82 MI. S OF INT LA494, Natchitoches, LA
Built 1948 Load: 32.4 t ADT: 111
Showing 7,951-8,000 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.