US Bridges

US-45 over Clear Creek

Poor

Ontonagon County, Michigan · 0.4 MI S of M-28 · Structure no. 000000000008494

Built
1931
94 years old
Condition
Poor
inspected June 2024
Type
Tee Beam
Concrete
Length
27 ft
1 main span
Daily traffic
1,648
2007 count
Owner
State
State Highway Agency

About this bridge

US-45 over Clear Creek is a concrete tee beam carrying US-45 over Clear Creek in Ontonagon County, Michigan. It was built in 1931, so it is 94 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,648 vehicles a day, roughly 10% of them trucks, projected to reach 2,100 by 2027. The structure is 27 ft (8.2 m) long and 38 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesUS-45
CrossesClear Creek
Location0.4 MI S of M-28
RouteU.S. Route 45
Coordinates46.52866, -89.17867
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 15 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating89.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length27 ft (8.2 m)
Longest span27 ft (8.2 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,648 (2007)
Projected traffic2,100 by 2027
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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-45 over Clear Creek built?

It was built in 1931, making it 94 years old in 2025.

What condition is US-45 over Clear Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does US-45 over Clear Creek carry?

About 1,648 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is US-45 over Clear Creek?

The structure is 27 ft (8.2 m) long with a longest span of 27 ft (8.2 m) and a deck 38 ft wide.

Who owns US-45 over Clear Creek?

It is owned by the State Highway Agency.