Total bridges
73
Public highway bridges in West Baton Rouge County
County profile · official public datasets
West Baton Rouge County, LA
73 public highway bridges tracked in the FHWA National Bridge Inventory: 32.9% rated Good, 52.1% Fair, 15.1% Poor.
- 73
- Public bridges
- 32.9%
- Good condition
- 15.1%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
West Baton Rouge County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- 47th
- of 64 on Poor share
- 15.1%
- Poor-condition share
- 73
- public highway bridges
- 1969
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
West Baton Rouge County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, West Baton Rouge County ranks #47 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 15.1%). West Baton Rouge County, Louisiana contains 73 public highway bridges. Roughly 32.9% are rated “Good,” 52.1% “Fair,” and 15.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
32.9%
24 of 73 rated 7-9
Fair condition
52.1%
38 of 73 rated 5-6
Poor condition
15.1%
11 of 73 rated 4 or below
In-state Poor-share rank
#47 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 73 NBI-tracked bridges by lowest applicable component rating.
Good 32.9% (24)
Fair 52.1% (38)
Poor 15.1% (11)
West Baton Rouge County's Poor-condition bridges carry 137,715 vehicle crossings a day
That is 9.6% of the county's reported daily bridge traffic on 15.1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 12,520 crossings a day against 13,628 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 73 of 73 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
79.5% of West Baton Rouge County's bridges have passed the 50-year mark
58 of the 73 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 32.9% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 30.2% of the county's Poor-condition bridge traffic
I0010 over I-10 OVER LA 415-WESTOVE, built 1969, carries 41,644 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 11-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 137,715 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When West Baton Rouge County's bridges were built
73 bridges with a recorded construction year, grouped by decade
- 1920s 2
1920–1929
2 bridges
- 1930s 1
1930–1939
1 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s
1950–1959
14 bridges
- 1960s
1960–1969
27 bridges
- 1970s
1970–1979
13 bridges
- 1980s 5
1980–1989
5 bridges
- 1990s 3
1990–1999
3 bridges
- 2000s 4
2000–2009
4 bridges
- 2010s 3
2010–2019
3 bridges
What this shows Construction peaked in the 1960s, when 27 of the county's bridges still in the inventory were built, which is 37% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1969, 13 years older than the Louisiana average of 1982.
How West Baton Rouge County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest West Baton Rouge County in number of bridges, with their condition splits. Its 15.1% Poor share is the 5th-lowest of these 6. Its average build year of 1969 against a peer-group mean of 1981 is 12 years older.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| St. Charles County | 82 | 59.8% | 39% | 1.2% | 1981 |
| Iberville County | 80 | 33.8% | 51.3% | 15% | 1975 |
| West Baton Rouge County (this page) | 73 | 32.9% | 52.1% | 15.1% | 1969 |
| Catahoula County | 70 | 45.7% | 45.7% | 8.6% | 1984 |
| Assumption County | 68 | 48.5% | 41.2% | 10.3% | 1984 |
| Red River County | 63 | 22.2% | 47.6% | 30.2% | 1982 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to West Baton Rouge County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for West Baton Rouge County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (73 bridges here).
- Stone County, AR · 73 bridges
- Levy County, FL · 73 bridges
- Putnam County, FL · 73 bridges
- Dade County, GA · 73 bridges
Similar average build year
Nearest mean year-built outside LA (1969 here).
- Cook County, IL · avg 1969 · 1,721 bridges
- Fresno County, CA · avg 1969 · 916 bridges
- Cuyahoga County, OH · avg 1969 · 871 bridges
- Ventura County, CA · avg 1969 · 501 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (38)
LA0986
FairOver: CHOCTAW BAYOU
0.72 M W of LA 986&LA 1, West Baton Rouge, LA
Built 1969 Load: 14.6 t ADT: 1,204
I0010
FairOver: I-10 OVER LA 1 & M.P. RR
I0010, West Baton Rouge, LA
Built 1968 Load: 18.1 t ADT: 197,070
US0190
FairOver: BAYOU CLAUSE
4.9 M E of LA 415, West Baton Rouge, LA
Built 2001 Load: 19.1 t ADT: 22,996
LA0986
FairOver: DRAINAGE CANAL
1.4 MILES EAST OF LA 415, West Baton Rouge, LA
Built 2013 Load: 19.8 t ADT: 1,204
LA0076
FairOver: CHAMBERLIN CANAL
2.3 M E of LA 413@LA 76, West Baton Rouge, LA
Built 1952 Load: 20.4 t ADT: 7,562
US0190
FairOver: BAYOU CLAUSE
4.8 M E OF LA 413, West Baton Rouge, LA
Built 2002 Load: 22.0 t ADT: 20,097
LA0620
FairOver: BAYOU CLAUSA
LA0620, West Baton Rouge, LA
Built 1958 Load: 23.6 t ADT: 2,107
I0010
FairOver: LA 1 UPRR LEBLANC RD
I0010, West Baton Rouge, LA
Built 1968 Load: 24.3 t ADT: 18,560
S. Westport Dr.
FairOver: Drainage Canal
2.0 Mi. E. of LA 415, West Baton Rouge, LA
Built 1970 Load: 24.9 t ADT: 3,500
Commercial Dr
FairOver: Drainage Canal
1.4 Mi. E. of LA 415, West Baton Rouge, LA
Built 1970 Load: 24.9 t ADT: 3,045
S. Westport Dr.
FairOver: Drainage Canal
0.8 Mi. E of LA 415, West Baton Rouge, LA
Built 1970 Load: 24.9 t ADT: 3,500
Commercial Dr
FairOver: Drainage Canal
1.0 Mi. E. of LA 415, West Baton Rouge, LA
Built 1970 Load: 24.9 t ADT: 3,760
I0010
FairOver: LA 1 RAMPS
I0010, West Baton Rouge, LA
Built 1968 Load: 29.2 t ADT: 18,560
LA0001
FairOver: MO PACIFIC RR
LA0001, West Baton Rouge, LA
Built 1966 Load: 31.8 t ADT: 14,751
US0190
FairOver: DRAINAGE CANAL
3.0 M E of LA 413@US 190, West Baton Rouge, LA
Built 1959 Load: 32.4 t ADT: 22,996
US0190
FairOver: POYDRAS BAYOU
0.01 M W of LA 413@US 190, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 20,176
LA0076
FairOver: STREAM NO NAME
1.9 M W of LA 413@LA 76, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 7,562
LA0076
FairOver: BAYOU TOMMY
0.4 M W of LA 413@LA 76, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 7,562
LA0076
FairOver: STREAM NO NAME
1.3 M E of LA 413@LA 76, West Baton Rouge, LA
Built 1952 Load: 32.4 t ADT: 7,562
I0010
FairOver: DRAINAGE CANAL
0.51 M W of LA 415&I-10, West Baton Rouge, LA
Built 1969 Load: 32.4 t ADT: 80,618
I0010
FairOver: DRAINAGE CANAL
0.92 M E of LA 415&I-10, West Baton Rouge, LA
Built 1969 Load: 32.4 t ADT: 41,644
I0010
FairOver: LA 1 RAMPS
I0010, West Baton Rouge, LA
Built 1968 Load: 32.4 t ADT: 18,560
I0010
FairOver: LA 1 RAMPS
I0010, West Baton Rouge, LA
Built 1968 Load: 32.7 t ADT: 18,560
I0010
FairOver: BAYOU CHOCTAW
I0010, West Baton Rouge, LA
Built 1974 Load: 33.0 t ADT: 80,618
US0190
FairOver: US 190 OVER TIGER BAYOU
10.55 M FROM EBR LINE, West Baton Rouge, LA
Built 2005 Load: 34.3 t ADT: 19,077
I0010
FairOver: BAYOU CHOCTAW
I0010, West Baton Rouge, LA
Built 1974 Load: 39.9 t ADT: 41,644
I0010
FairOver: RAMP TO PORT ALLEN
0.18 M E of LA 1, West Baton Rouge, LA
Built 1968 Load: 41.7 t ADT: 7,586
I0010
FairOver: RAMP
0.21 M W of LA 1, West Baton Rouge, LA
Built 1968 Load: 42.6 t ADT: 18,560
LA0076
FairOver: STUMPY BAYOU
0.2 M E of LA 413, West Baton Rouge, LA
Built 1971 Load: 43.5 t ADT: 7,562
I0010
FairOver: LA 1/M P RR/LOC RD
1.9 M E of LA 415, West Baton Rouge, LA
Built 1968 Load: 45.4 t ADT: 4,035
I0010
FairOver: I-10 OVER LA 415-WESTOVE
I0010, West Baton Rouge, LA
Built 1969 Load: 47.2 t ADT: 80,618
I0010
FairOver: BRIDGE 290 WBL
4.85 M W of LA 415&I-10, West Baton Rouge, LA
Built 1973 Load: 49.9 t ADT: 41,644
I0010
FairOver: FRONTAGE ROAD
I0010, West Baton Rouge, LA
Built 1968 Load: 50.8 t ADT: 52,159
I0010
FairOver: RAMP
0.37 M E of LA 1, West Baton Rouge, LA
Built 1968 Load: 54.4 t ADT: 7,586
S. Westport Dr.
FairOver: Drainage Canal
1.38 Mi. E. of LA 415, West Baton Rouge, LA
Built 1970 Load: 61.2 t ADT: 3,500
I0010
FairOver: RAMPS
I0010, West Baton Rouge, LA
Built 1968 Load: 72.6 t ADT: 52,159
LA9873
FairOver: DRAINAGE CANAL
0.4 MILES EAST OF HWY 415, West Baton Rouge, LA
Built 1962 Load: 74.5 t ADT: 1,725
LA9873
FairOver: DRAINAGE CANAL
1.7 MILES EAST OF HWY 415, West Baton Rouge, LA
Built 1962 Load: 74.5 t ADT: 1,725
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.