US Bridges

LA0641 over Mc Williams Pipeline Xin

Fair

St. James Parish, Louisiana · LA 641 1.4 MI S of I-10 · Structure no. 614708470204201

Built
1982
43 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
130 ft
6 main spans
Daily traffic
6,427
2021 count
Owner
State
State Highway Agency

About this bridge

LA0641 over Mc Williams Pipeline Xin is a concrete continuous slab carrying LA0641 over Mc Williams Pipeline Xin in St. James Parish, Louisiana. It was built in 1982, so it is 43 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,427 vehicles a day, roughly 18% of them trucks, projected to reach 7,069 by 2041. The structure is 130 ft (39.6 m) long and 48 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesLA0641
CrossesMc Williams Pipeline Xin
LocationLA 641 1.4 MI S of I-10
RouteState Highway 641
Coordinates30.09265, -90.68546
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span30 ft (9.1 m)
Deck width48 ft (14.5 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,427 (2021)
Projected traffic7,069 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed19.9 mi (32 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0641 over Mc Williams Pipeline Xin built?

It was built in 1982, making it 43 years old in 2025.

What condition is LA0641 over Mc Williams Pipeline Xin in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does LA0641 over Mc Williams Pipeline Xin carry?

About 6,427 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is LA0641 over Mc Williams Pipeline Xin?

The structure is 130 ft (39.6 m) long with a longest span of 30 ft (9.1 m) and a deck 48 ft wide.

Who owns LA0641 over Mc Williams Pipeline Xin?

It is owned by the State Highway Agency.