US Bridges

Pinconning Road over Pinconning River

Fair

Bay County, Michigan · 0.75 MI W of Pinconning · Structure no. 000000000000692

Built
1987
38 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
27 ft
1 main span
Daily traffic
5,405
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 1987, so it is 38 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,405 vehicles a day, roughly 10% of them trucks, projected to reach 8,648 by 2020. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPinconning Road
CrossesPinconning River
Location0.75 MI W of Pinconning
RouteCounty Highway 974
CountyBay County
StateMichigan
Coordinates43.85366, -83.98434
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.3 US tons
Inventory rating34.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length27 ft (8.2 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 traffic5,405 (2000)
Projected traffic8,648 by 2020
Trucks10%
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 1987, making it 38 years old in 2025.

What condition is Pinconning Road over Pinconning River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does Pinconning Road over Pinconning River carry?

About 5,405 vehicles per day (2000 count), of which roughly 10% are trucks.

How long is Pinconning Road over Pinconning River?

The structure is 27 ft (8.2 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.