US Bridges

Atherton Road over Carman Creek

Good

Genesee County, Michigan · In City of Flint · Structure no. 000000000002827

Built
2020
5 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
8,547
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Atherton Road over Carman Creek is a prestressed concrete box beam or girders - single or spread carrying Atherton Road over Carman Creek in Genesee County, Michigan. It was built in 2020, so it is 5 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 8,547 vehicles a day, roughly 8% of them trucks, projected to reach 10,429 by 2036. The structure is 40 ft (12.2 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesAtherton Road
CrossesCarman Creek
LocationIn City of Flint
RouteCity Street 2002
CountyGenesee County
StateMichigan
Coordinates42.98833, -83.7052
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating45.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length40 ft (12.2 m)
Longest span37 ft (11.4 m)
Deck width58 ft (17.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,547 (2016)
Projected traffic10,429 by 2036
Trucks8%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Atherton Road over Carman Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Atherton Road over Carman 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 November 2023.

How much traffic does Atherton Road over Carman Creek carry?

About 8,547 vehicles per day (2016 count), of which roughly 8% are trucks.

How long is Atherton Road over Carman Creek?

The structure is 40 ft (12.2 m) long with a longest span of 37 ft (11.4 m) and a deck 58 ft wide.

Who owns Atherton Road over Carman Creek?

It is owned by the City or Municipal Highway Agency.