US Bridges

US0090/RAMP C over 6th St.

Good

St. Mary Parish, Louisiana · 8.9 MI East of LA 182 · Structure no. 035104240532325

Built
1977
48 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
429 ft
2 main spans
Daily traffic
12,192
2021 count
Owner
State
State Highway Agency

About this bridge

US0090/RAMP C over 6th St. is a prestressed concrete stringer/multi-beam or girder carrying US0090/RAMP C over 6th St. in St. Mary 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 12,192 vehicles a day, roughly 10% of them trucks, projected to reach 13,411 by 2041. The structure is 429 ft (130.8 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS0090/RAMP C
Crosses6th St.
Location8.9 MI East of LA 182
RouteU.S. Route 90
CountySt. Mary Parish
StateLouisiana
Coordinates29.69212, -91.2222
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+4 approach)
Design loadHS 20
Structure length429 ft (130.8 m)
Longest span82 ft (25 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,192 (2021)
Projected traffic13,411 by 2041
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 US0090/RAMP C over 6th St. built?

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

What condition is US0090/RAMP C over 6th St. 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 June 2023.

How much traffic does US0090/RAMP C over 6th St. carry?

About 12,192 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is US0090/RAMP C over 6th St.?

The structure is 429 ft (130.8 m) long with a longest span of 82 ft (25 m) and a deck 28 ft wide.

Who owns US0090/RAMP C over 6th St.?

It is owned by the State Highway Agency.