US Bridges

Woodbury Road over S Br Lookingglass River

Fair

Shiawassee County, Michigan · 5.5 Miles S of Laingsburg · Structure no. 000000000009804

Built
1990
35 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
4,809
2005 count
Owner
County
County Highway Agency

About this bridge

Woodbury Road over S Br Lookingglass River is a prestressed concrete stringer/multi-beam or girder carrying Woodbury Road over S Br Lookingglass River in Shiawassee County, Michigan. It was built in 1990, so it is 35 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,809 vehicles a day, roughly 15% of them trucks, projected to reach 7,146 by 2025. The structure is 51 ft (15.5 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesWoodbury Road
CrossesS Br Lookingglass River
Location5.5 Miles S of Laingsburg
RouteCounty Highway 7607
Coordinates42.80319, -84.34786
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length51 ft (15.5 m)
Longest span49 ft (14.9 m)
Deck width47 ft (14.3 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,809 (2005)
Projected traffic7,146 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Woodbury Road over S Br Lookingglass River built?

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

What condition is Woodbury Road over S Br Lookingglass River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Woodbury Road over S Br Lookingglass River carry?

About 4,809 vehicles per day (2005 count), of which roughly 15% are trucks.

How long is Woodbury Road over S Br Lookingglass River?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 47 ft wide.

Who owns Woodbury Road over S Br Lookingglass River?

It is owned by the County Highway Agency.