US Bridges

D Drive N over Harper Creek

Good

Calhoun County, Michigan · 500 Ft W of 8 MI RD · Structure no. 000000000014335

Built
2019
6 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
32 ft
1 main span
Daily traffic
1,200
2019 count
Owner
County
County Highway Agency

About this bridge

D Drive N over Harper Creek is a concrete culvert carrying D Drive N over Harper Creek in Calhoun County, Michigan. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,200 vehicles a day, roughly 5% of them trucks, projected to reach 1,380 by 2039. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesD Drive N
CrossesHarper Creek
Location500 Ft W of 8 MI RD
RouteCounty Highway 0
CountyCalhoun County
StateMichigan
Coordinates42.2757, -85.1556
Functional classUrban 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.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating71.4 US tons
Inventory rating56.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2019)
Projected traffic1,380 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 D Drive N over Harper Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is D Drive N over Harper Creek 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 July 2023.

How much traffic does D Drive N over Harper Creek carry?

About 1,200 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is D Drive N over Harper Creek?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m).

Who owns D Drive N over Harper Creek?

It is owned by the County Highway Agency.