US Bridges

Lansing Road over Lookingglass River

Good

Shiawassee County, Michigan · 3 MI SW of Bancroft · Structure no. 000000000009782

Built
2007
18 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
2,568
2011 count
Owner
County
County Highway Agency

About this bridge

Lansing Road over Lookingglass River is a prestressed concrete box beam or girders - multiple carrying Lansing Road over Lookingglass River in Shiawassee County, Michigan. It was built in 2007, so it is 18 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 2,568 vehicles a day, roughly 20% of them trucks, projected to reach 3,698 by 2031. The structure is 60 ft (18.3 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesLansing Road
CrossesLookingglass River
Location3 MI SW of Bancroft
RouteCounty Highway 7628
CountyShiawassee County
StateMichigan
Coordinates42.86211, -84.12579
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating50 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span56 ft (17.1 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,568 (2011)
Projected traffic3,698 by 2031
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$550,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lansing Road over Lookingglass River built?

It was built in 2007, making it 18 years old in 2025.

What condition is Lansing Road over 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 May 2024.

How much traffic does Lansing Road over Lookingglass River carry?

About 2,568 vehicles per day (2011 count), of which roughly 20% are trucks.

How long is Lansing Road over Lookingglass River?

The structure is 60 ft (18.3 m) long with a longest span of 56 ft (17.1 m) and a deck 44 ft wide.

Who owns Lansing Road over Lookingglass River?

It is owned by the County Highway Agency.