US Bridges

LA0128 over Saddle Tree Lake

Good

Tensas Parish, Louisiana · 0.20 M N of LA 128 · Structure no. 585400360509111

Built
1990
35 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
265 ft
5 main spans
Daily traffic
549
2021 count
Owner
State
State Highway Agency

About this bridge

LA0128 over Saddle Tree Lake is a prestressed concrete continuous stringer/multi-beam or girder carrying LA0128 over Saddle Tree Lake in Tensas Parish, Louisiana. It was built in 1990, so it is 35 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.

It carries about 549 vehicles a day, roughly 21% of them trucks, projected to reach 603 by 2041. The structure is 265 ft (80.8 m) long and 32 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesLA0128
CrossesSaddle Tree Lake
Location0.20 M N of LA 128
RouteState Highway 128
Coordinates32.02033, -91.3653
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length265 ft (80.8 m)
Longest span53 ft (16.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic549 (2021)
Projected traffic603 by 2041
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 LA0128 over Saddle Tree Lake built?

It was built in 1990, making it 35 years old in 2025.

What condition is LA0128 over Saddle Tree Lake 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 August 2023.

How much traffic does LA0128 over Saddle Tree Lake carry?

About 549 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is LA0128 over Saddle Tree Lake?

The structure is 265 ft (80.8 m) long with a longest span of 53 ft (16.2 m) and a deck 32 ft wide.

Who owns LA0128 over Saddle Tree Lake?

It is owned by the State Highway Agency.