US Bridges

US-10 over Culver Drain

Fair

Bay County, Michigan · 2.0 MI E of Auburn · Structure no. 000000000000652

Built
1956
69 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
35 ft
1 main span
Daily traffic
33,474
2007 count
Owner
State
State Highway Agency

About this bridge

US-10 over Culver Drain is a concrete tee beam carrying US-10 over Culver Drain in Bay County, Michigan. It was built in 1956, so it is 69 years old, older 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 33,474 vehicles a day, roughly 6% of them trucks, projected to reach 38,748 by 2018. The structure is 35 ft (10.6 m) long and 109 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS-10
CrossesCulver Drain
Location2.0 MI E of Auburn
RouteU.S. Route 10
Coordinates43.5966, -84.02563
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.7 US tons
Inventory rating41.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length35 ft (10.6 m)
Longest span35 ft (10.6 m)
Deck width109 ft (33.3 m)
Roadway width106 ft (32.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,474 (2007)
Projected traffic38,748 by 2018
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US-10 over Culver Drain built?

It was built in 1956, making it 69 years old in 2025.

What condition is US-10 over Culver Drain 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 August 2023.

How much traffic does US-10 over Culver Drain carry?

About 33,474 vehicles per day (2007 count), of which roughly 6% are trucks.

How long is US-10 over Culver Drain?

The structure is 35 ft (10.6 m) long with a longest span of 35 ft (10.6 m) and a deck 109 ft wide.

Who owns US-10 over Culver Drain?

It is owned by the State Highway Agency.