US Bridges

County Road G 17 over Days River

Good

Delta County, Michigan · 2.5 M W 1.5 M S Perkins · Structure no. 000000000002146

Built
2018
7 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
56 ft
1 main span
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

County Road G 17 over Days River is a concrete culvert carrying County Road G 17 over Days River in Delta County, Michigan. It was built in 2018, so it is 7 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 26 vehicles a day, roughly 11% of them trucks, projected to reach 29 by 2042. The structure is 56 ft (17.1 m) long. If it were closed, the detour would be 123 mi (198 km).

Location

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CarriesCounty Road G 17
CrossesDays River
Location2.5 M W 1.5 M S Perkins
RouteCounty Highway 0
CountyDelta County
StateMichigan
Coordinates45.95636, -87.12126
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating78.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length56 ft (17.1 m)
Longest span56 ft (17.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic29 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$70,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road G 17 over Days River built?

It was built in 2018, making it 7 years old in 2025.

What condition is County Road G 17 over Days 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 June 2023.

How much traffic does County Road G 17 over Days River carry?

About 26 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is County Road G 17 over Days River?

The structure is 56 ft (17.1 m) long with a longest span of 56 ft (17.1 m).

Who owns County Road G 17 over Days River?

It is owned by the County Highway Agency.