US Bridges

Mayfield Road over South Br. Flint River

GoodPosted for load

Lapeer County, Michigan · Sec. 29 Mayfield Twp. · Structure no. 000000000005442

Built
1988
37 years old
Condition
Good
inspected July 2023
Type
Slab
Wood or Timber
Length
128 ft
4 main spans
Daily traffic
1,594
2020 count
Owner
County
County Highway Agency

About this bridge

Mayfield Road over South Br. Flint River is a wood or timber slab carrying Mayfield Road over South Br. Flint River in Lapeer County, Michigan. It was built in 1988, so it is 37 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. Its operating status is: posted for load restriction.

It carries about 1,594 vehicles a day, projected to reach 1,945 by 2040. The structure is 128 ft (39 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMayfield Road
CrossesSouth Br. Flint River
LocationSec. 29 Mayfield Twp.
RouteCounty Highway 0
CountyLapeer County
StateMichigan
Coordinates43.08203, -83.31699
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating19 US tons
Inventory rating13.9 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadHS 20
Structure length128 ft (39 m)
Longest span32 ft (9.7 m)
Deck width34 ft (10.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,594 (2020)
Projected traffic1,945 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Mayfield Road over South Br. Flint River built?

It was built in 1988, making it 37 years old in 2025.

What condition is Mayfield Road over South Br. Flint 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 July 2023.

How much traffic does Mayfield Road over South Br. Flint River carry?

About 1,594 vehicles per day (2020 count).

How long is Mayfield Road over South Br. Flint River?

The structure is 128 ft (39 m) long with a longest span of 32 ft (9.7 m) and a deck 34 ft wide.

Who owns Mayfield Road over South Br. Flint River?

It is owned by the County Highway Agency.