US Bridges

Pinconning Road over Pinconning River

Good

Bay County, Michigan · 1500 Ft W of Eight Mile · Structure no. 000000000000691

Built
1995
30 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
3,218
2000 count
Owner
County
County Highway Agency

About this bridge

Pinconning Road over Pinconning River is a concrete culvert carrying Pinconning Road over Pinconning River in Bay 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 3,218 vehicles a day, projected to reach 5,149 by 2020. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPinconning Road
CrossesPinconning River
Location1500 Ft W of Eight Mile
RouteCounty Highway 974
CountyBay County
StateMichigan
Coordinates43.85406, -84.05173
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,218 (2000)
Projected traffic5,149 by 2020
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Pinconning Road over Pinconning River built?

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

What condition is Pinconning Road over Pinconning 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 April 2024.

How much traffic does Pinconning Road over Pinconning River carry?

About 3,218 vehicles per day (2000 count).

How long is Pinconning Road over Pinconning River?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m).

Who owns Pinconning Road over Pinconning River?

It is owned by the County Highway Agency.