US Bridges

Amber ST over French Branch

GoodPosted for load

St. Tammany Parish, Louisiana · N. of 190 Amber St. Lm 10 · Structure no. 625230175894401

Built
2001
24 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
550
1999 count
Owner
County
County Highway Agency

About this bridge

Amber ST over French Branch is a concrete slab carrying Amber ST over French Branch in St. Tammany Parish, Louisiana. It was built in 2001, so it is 24 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 550 vehicles a day, projected to reach 605 by 2019. The structure is 95 ft (29 m) long and 27 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesAmber ST
CrossesFrench Branch
LocationN. of 190 Amber St. Lm 10
RouteCounty Highway 0
Coordinates30.28933, -89.73343
Functional classRural Minor 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (1999)
Projected traffic605 by 2019
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Amber ST over French Branch built?

It was built in 2001, making it 24 years old in 2025.

What condition is Amber ST over French Branch 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 January 2025.

How much traffic does Amber ST over French Branch carry?

About 550 vehicles per day (1999 count).

How long is Amber ST over French Branch?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Amber ST over French Branch?

It is owned by the County Highway Agency.