US Bridges

Colony RD over Maple River

Good

Clinton County, Michigan · 1/2 MI E of Chandler · Structure no. 000000000001910

Built
2013
12 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
122 ft
1 main span
Daily traffic
1,292
2012 count
Owner
County
County Highway Agency

About this bridge

Colony RD over Maple River is a prestressed concrete box beam or girders - multiple carrying Colony RD over Maple River in Clinton County, Michigan. It was built in 2013, so it is 12 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 1,292 vehicles a day, roughly 5% of them trucks, projected to reach 1,919 by 2032. The structure is 122 ft (37.2 m) long and 34 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesColony RD
CrossesMaple River
Location1/2 MI E of Chandler
RouteCounty Highway 0
Coordinates43.04535, -84.46984
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating26.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length122 ft (37.2 m)
Longest span121 ft (36.8 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,292 (2012)
Projected traffic1,919 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Colony RD over Maple River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Colony 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 October 2023.

How much traffic does Colony RD over Maple River carry?

About 1,292 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Colony RD over Maple River?

The structure is 122 ft (37.2 m) long with a longest span of 121 ft (36.8 m) and a deck 34 ft wide.

Who owns Colony RD over Maple River?

It is owned by the County Highway Agency.