US Bridges

LA3142 over MP RR @ Taft

Good

St. Charles Parish, Louisiana · .45 MI North of LA 3127 · Structure no. 024508452000451

Built
1977
48 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,497 ft
21 main spans
Daily traffic
5,122
2021 count
Owner
State
State Highway Agency

About this bridge

LA3142 over MP RR @ Taft is a prestressed concrete stringer/multi-beam or girder carrying LA3142 over MP RR @ Taft in St. Charles Parish, Louisiana. It was built in 1977, so it is 48 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,122 vehicles a day, roughly 5% of them trucks, projected to reach 5,634 by 2041. The structure is 1,497 ft (456.3 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLA3142
CrossesMP RR @ Taft
Location.45 MI North of LA 3127
RouteState Highway 3142
CountySt. Charles Parish
StateLouisiana
Coordinates29.97731, -90.4576
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans21
Design loadHS 20
Structure length1,497 ft (456.3 m)
Longest span95 ft (29 m)
Deck width34 ft (10.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,122 (2021)
Projected traffic5,634 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.8 mi (11 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA3142 over MP RR @ Taft built?

It was built in 1977, making it 48 years old in 2025.

What condition is LA3142 over MP RR @ Taft in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does LA3142 over MP RR @ Taft carry?

About 5,122 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is LA3142 over MP RR @ Taft?

The structure is 1,497 ft (456.3 m) long with a longest span of 95 ft (29 m) and a deck 34 ft wide.

Who owns LA3142 over MP RR @ Taft?

It is owned by the State Highway Agency.