US Bridges

Bay Creek Road over Flat Creek

Good

Monroe County, Michigan · 0.2 MI E of Summit Street · Structure no. 000000000007343

Built
1957
68 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
140
2012 count
Owner
County
County Highway Agency

About this bridge

Bay Creek Road over Flat Creek is a concrete continuous culvert carrying Bay Creek Road over Flat Creek in Monroe County, Michigan. It was built in 1957, so it is 68 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 140 vehicles a day, roughly 4% of them trucks, projected to reach 161 by 2032. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 6.8 mi (11 km).

CarriesBay Creek Road
CrossesFlat Creek
Location0.2 MI E of Summit Street
RouteCounty Highway 0
Coordinates41.75775, -83.48
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length23 ft (6.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2012)
Projected traffic161 by 2032
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Bay Creek Road over Flat Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Bay Creek Road over Flat 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 September 2024.

How much traffic does Bay Creek Road over Flat Creek carry?

About 140 vehicles per day (2012 count), of which roughly 4% are trucks.

How long is Bay Creek Road over Flat Creek?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3 m).

Who owns Bay Creek Road over Flat Creek?

It is owned by the County Highway Agency.