US Bridges

Colony Drive over Unnamed Canal

Good

St. Clair County, Michigan · 100FT W of Van Dyke · Structure no. 000000000013605

Built
1995
30 years old
Condition
Good
inspected May 2024
Type
Channel Beam
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
500
1994 count
Owner
County
County Highway Agency

About this bridge

Colony Drive over Unnamed Canal is a prestressed concrete channel beam carrying Colony Drive over Unnamed Canal in St. Clair County, Michigan. It was built in 1995, so it is 30 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 500 vehicles a day, roughly 3% of them trucks, projected to reach 520 by 2004. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 198.8 mi (320 km).

Location

Open in Google Maps
CarriesColony Drive
CrossesUnnamed Canal
Location100FT W of Van Dyke
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.63217, -82.61606
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 protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.7 US tons
Inventory rating41.8 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span32 ft (9.8 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (1994)
Projected traffic520 by 2004
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed198.8 mi (320 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 Drive over Unnamed Canal built?

It was built in 1995, making it 30 years old in 2025.

What condition is Colony Drive over Unnamed Canal 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 Colony Drive over Unnamed Canal carry?

About 500 vehicles per day (1994 count), of which roughly 3% are trucks.

How long is Colony Drive over Unnamed Canal?

The structure is 33 ft (10.1 m) long with a longest span of 32 ft (9.8 m) and a deck 24 ft wide.

Who owns Colony Drive over Unnamed Canal?

It is owned by the County Highway Agency.