US Bridges

Cook RD over Maple River

GoodPosted for load

Shiawassee County, Michigan · 3.5 MI S of Owosso · Structure no. 000000000009831

Built
1970
55 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
215
2020 count
Owner
County
County Highway Agency

About this bridge

Cook RD over Maple River is a prestressed concrete box beam or girders - multiple carrying Cook RD over Maple River in Shiawassee County, Michigan. It was built in 1970, so it is 55 years old, older 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. Its operating status is: posted for load restriction.

It carries about 215 vehicles a day, roughly 5% of them trucks, projected to reach 262 by 2040. The structure is 54 ft (16.5 m) long and 27 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCook RD
CrossesMaple River
Location3.5 MI S of Owosso
RouteCounty Highway 0
Coordinates42.94796, -84.16742
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating27.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span50 ft (15.2 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic215 (2020)
Projected traffic262 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Cook RD over Maple River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Cook RD over Maple 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 March 2024.

How much traffic does Cook RD over Maple River carry?

About 215 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Cook RD over Maple River?

The structure is 54 ft (16.5 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.

Who owns Cook RD over Maple River?

It is owned by the County Highway Agency.