US Bridges

LA0020 over Bayou Chevrevil

Poor

St. James Parish, Louisiana · 1.2 MI N of LA 307 · Structure no. 614700650700391

Built
1959
66 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
349 ft
1 main span
Daily traffic
8,204
2021 count
Owner
State
State Highway Agency

About this bridge

LA0020 over Bayou Chevrevil is a steel stringer/multi-beam or girder carrying LA0020 over Bayou Chevrevil in St. James Parish, Louisiana. It was built in 1959, so it is 66 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, temporary structure in place while original is closed.

It carries about 8,204 vehicles a day, roughly 18% of them trucks, projected to reach 9,024 by 2041. The structure is 349 ft (106.4 m) long and 29 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

CarriesLA0020
CrossesBayou Chevrevil
Location1.2 MI N of LA 307
RouteState Highway 20
Coordinates29.91063, -90.72964
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, temporary structure in place while original is closed
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans1 (+10 approach)
Design loadH 15
Structure length349 ft (106.4 m)
Longest span45 ft (13.7 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,204 (2021)
Projected traffic9,024 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0020 over Bayou Chevrevil built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0020 over Bayou Chevrevil in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does LA0020 over Bayou Chevrevil carry?

About 8,204 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is LA0020 over Bayou Chevrevil?

The structure is 349 ft (106.4 m) long with a longest span of 45 ft (13.7 m) and a deck 29 ft wide.

Who owns LA0020 over Bayou Chevrevil?

It is owned by the State Highway Agency.