US Bridges

Warner RD over S Br Lookingglass River

Good

Shiawassee County, Michigan · 1 MI SW of Shaftsburg · Structure no. 000000000009883

Built
2001
24 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
510
2000 count
Owner
County
County Highway Agency

About this bridge

Warner RD over S Br Lookingglass River is a prestressed concrete box beam or girders - multiple carrying Warner RD over S Br Lookingglass River in Shiawassee County, Michigan. It was built in 2001, so it is 24 years old, younger than the Michigan average of 48.3 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 510 vehicles a day, roughly 5% of them trucks, projected to reach 921 by 2020. The structure is 60 ft (18.3 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesWarner RD
CrossesS Br Lookingglass River
Location1 MI SW of Shaftsburg
RouteCounty Highway 0
Coordinates42.7974, -84.31267
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.7 US tons
Inventory rating48.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width34 ft (10.5 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic510 (2000)
Projected traffic921 by 2020
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Warner RD over S Br Lookingglass River built?

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

What condition is Warner RD over S Br Lookingglass River 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 April 2024.

How much traffic does Warner RD over S Br Lookingglass River carry?

About 510 vehicles per day (2000 count), of which roughly 5% are trucks.

How long is Warner RD over S Br Lookingglass River?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 34 ft wide.

Who owns Warner RD over S Br Lookingglass River?

It is owned by the County Highway Agency.