US Bridges

Canboro Road over West Br. Pigeon River

Good

Huron County, Michigan · Sec. 5-8 Grant Twp. · Structure no. 000000000003593

Built
1970
55 years old
Condition
Good
inspected September 2023
Type
Culvert
Steel
Length
26 ft
2 main spans
Daily traffic
75
2009 count
Owner
County
County Highway Agency

About this bridge

Canboro Road over West Br. Pigeon River is a steel culvert carrying Canboro Road over West Br. Pigeon River in Huron 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.

It carries about 75 vehicles a day, roughly 1% of them trucks, projected to reach 135 by 2029. The structure is 26 ft (8 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCanboro Road
CrossesWest Br. Pigeon River
LocationSec. 5-8 Grant Twp.
RouteCounty Highway 0
CountyHuron County
StateMichigan
Coordinates43.74476, -83.21149
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length26 ft (8 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2009)
Projected traffic135 by 2029
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Canboro Road over West Br. Pigeon River built?

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

What condition is Canboro Road over West Br. Pigeon 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 September 2023.

How much traffic does Canboro Road over West Br. Pigeon River carry?

About 75 vehicles per day (2009 count), of which roughly 1% are trucks.

How long is Canboro Road over West Br. Pigeon River?

The structure is 26 ft (8 m) long with a longest span of 11 ft (3.5 m).

Who owns Canboro Road over West Br. Pigeon River?

It is owned by the County Highway Agency.