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
LA0465
FairOver: TWO MILE BRANCH
6.5 MI EAST OF LA 8, Vernon, LA
Built 1981 Load: 38.1 t ADT: 500
South Calvin
FairOver: KYIAIES CREEK RELIEF
0.53 MI. SOUTH OF LA 156, Winn, LA
Built 1991 Load: 38.1 t ADT: 80
LA0129
FairOver: SIX MILE BAYOU
1.35 MI N OF LA 909, Concordia, LA
Built 1971 Load: 38.1 t ADT: 161
LA0562
FairOver: CREEK
1.40 M S of LA 875, Franklin, LA
Built 1981 Load: 38.1 t ADT: 2,036
LA0028
FairOver: ALLIGATOR BAYOU
1.40 MI E of LA 115, LaSalle, LA
Built 1960 Load: 38.1 t ADT: 5,026
LA0028
FairOver: DIVERSION CHANNEL
10.3 MI SOUTH OF LA 84, LaSalle, LA
Built 1972 Load: 38.1 t ADT: 5,026
LA0460
FairOver: CREEK
2.3 MI EAST OF LA 127, LaSalle, LA
Built 1980 Load: 38.1 t ADT: 776
LA0460
FairOver: CREEK
4.0 MI EAST OF LA 127, LaSalle, LA
Built 1974 Load: 38.1 t ADT: 776
Bridge St
FairOver: BAYOU LAFOURCHE
PLATTENVILLE, Assumption, LA
Built 1984 Load: 38.1 t ADT: 480
I0010
FairOver: LA 30 Nicholson Dr
1.2 Mi E. of LA 1, East Baton Rouge, LA
Built 1967 Load: 38.1 t ADT: 11,311
I0010
FairOver: NICHOL.DR.ON RAMP
I0010, East Baton Rouge, LA
Built 1967 Load: 38.1 t ADT: 8,250
LA0067
FairOver: OLIVE BRANCH
0.2 Mi N of LA 412, East Feliciana, LA
Built 1965 Load: 38.1 t ADT: 5,772
LA0067
FairOver: CANY BRANCH
0.2 M N of LA 63&LA 67, East Feliciana, LA
Built 1976 Load: 38.1 t ADT: 5,772
LA0010
FairOver: ICG RAILROAD
LA0010, East Feliciana, LA
Built 1955 Load: 38.1 t ADT: 5,830
LA0955
FairOver: FISHER BAYOU
0.8 M SE of LA 955&LA 19, East Feliciana, LA
Built 1970 Load: 38.1 t ADT: 989
LA0955
FairOver: FISHER BAYOU
0.6 M SE of LA 19, East Feliciana, LA
Built 1970 Load: 38.1 t ADT: 989
I0012
FairOver: I-12 OVER LA 3002
I0012, Livingston, LA
Built 1970 Load: 38.1 t ADT: 77,469
I0012
FairOver: I-12 OVER LA 3002
I0012, Livingston, LA
Built 1970 Load: 38.1 t ADT: 37,161
I0012
FairOver: HOG BRANCH
I0012, Livingston, LA
Built 1969 Load: 38.1 t ADT: 75,867
I0012
FairOver: HOG BRANCH
I0012, Livingston, LA
Built 1969 Load: 38.1 t ADT: 44,252
LA1032
FairOver: DRAIN
2.3 M S OF I-12, Livingston, LA
Built 1976 Load: 38.1 t ADT: 9,267
US0051
FairOver: DRAINAGE CANAL
0.1 M NE OF I-55, St. John the Baptist, LA
Built 1975 Load: 38.1 t ADT: 16,686
US0190
FairOver: TCHEFUNCTE RIVER
US0190, St. Tammany, LA
Built 1968 Load: 38.1 t ADT: 11,418
US0190
FairOver: PONCHITOLAWA CREEK
US 190, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 27,870
US0190
FairOver: PONCHITOLAWA CR
US 190, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 9,838
LA0040
FairOver: SIMALOUSA CREEK
1.7 M SE OF LA 437, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 5,160
LA0059
FairOver: CHINCHUBA BRANCH
1.6 M N OF I-12, St. Tammany, LA
Built 1972 Load: 38.1 t ADT: 14,110
LA0059
FairOver: DRAIN
3.0 M N OF I-12, St. Tammany, LA
Built 1972 Load: 38.1 t ADT: 14,110
LA0059
FairOver: ABITA RIVER
4.0 M N OF I-12, St. Tammany, LA
Built 1972 Load: 38.1 t ADT: 14,110
I0012
FairOver: I-12 OVER I-59 NB
I0012, St. Tammany, LA
Built 1970 Load: 38.1 t ADT: 78,215
US0190
FairOver: OVER FRENCH BRANCH
US 190 LOG MI 2.89, St. Tammany, LA
Built 1984 Load: 38.1 t ADT: 21,254
US0190
FairOver: NATALBANY RIVER
2.55 MI. WEST OF I-55, Tangipahoa, LA
Built 1950 Load: 38.1 t ADT: 8,928
LA1051
FairOver: DRAIN
LA. 1051, Tangipahoa, LA
Built 1975 Load: 38.1 t ADT: 1,870
LA1054
FairOver: SPRING CREEK
LA 1054 LOGMI 00.08, Tangipahoa, LA
Built 1981 Load: 38.1 t ADT: 1,318
LA0438
FairOver: LAW CANAL
4.7M NE OF JCT LA 38, Washington, LA
Built 1992 Load: 38.1 t ADT: 688
LA0424
FairOver: DRAIN
1.2M NORTH OF INT LA 62, Washington, LA
Built 1993 Load: 38.1 t ADT: 1,873
LA1071
FairOver: SCARBOROUGH CREEK
LA1071, Washington, LA
Built 1974 Load: 38.1 t ADT: 498
LA0154
FairOver: BLACK LAKE RELIEF
.57 MI NORTH OF US 80, Bienville, LA
Built 1971 Load: 38.2 t ADT: 1,489
LA0526
FairOver: SAND BEACH BAYOU
.96 MI N OF JCT LA 3132, Caddo, LA
Built 1977 Load: 38.2 t ADT: 19,314
LA0526
FairOver: SAND BEACH BAYOU
096 MI NO OF JCT LA 3132, Caddo, LA
Built 1977 Load: 38.2 t ADT: 19,314
S RIVER RD
FairOver: BAPTISTE CREEK
2.6 MI SOUTH OF LA 10, Allen, LA
Built 2003 Load: 38.2 t ADT: 70
SAM CLOUD RD
FairOver: SARGENT CREEK
2.3 MI EAST OF LA 112, Allen, LA
Built 2003 Load: 38.2 t ADT: 985
LONGVILLE RD
FairOver: CANEY CREEK
3.2 MI E OF US 171, Beauregard, LA
Built 1986 Load: 38.2 t ADT: 220
N BEARHEAD RD
FairOver: GUM SLOUGH CREEK
4.7 MI W of LA 27, Beauregard, LA
Built 2005 Load: 38.2 t ADT: 50
LUMAS RD
FairOver: BEE MOUTH BRANCH CREEK
2.1 MI E of US 171, Beauregard, LA
Built 2005 Load: 38.2 t ADT: 50
MCDONALD RD
FairOver: SUGAR CREEK
1.0 MI E. OF LA 113, Beauregard, LA
Built 2005 Load: 38.2 t ADT: 190
FRANKLIN RD
FairOver: PALMETTO CREEK
0.9 M N OF GRANBERRY RD, Beauregard, LA
Built 2005 Load: 38.2 t ADT: 160
FRANKLIN RD
FairOver: CREEK
1.0 M N OF GRANBERRY RD, Beauregard, LA
Built 2005 Load: 38.2 t ADT: 160
FRIESEN RD
FairOver: GOVERNMENT DITCH 011
0.5 MI EAST OF LA 397, Calcasieu, LA
Built 2001 Load: 38.2 t ADT: 131
HOLBROOK PARK RD
FairOver: LITTLE RIVER
2.8 MI E of LA 27, Calcasieu, LA
Built 1998 Load: 38.2 t ADT: 618
Showing 4,701-4,750 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.