US Bridges

M-120 over Cedar Creek

Fair

Muskegon County, Michigan · 4.2 MI SW of M-82 · Structure no. 000000000007551

Built
1935
90 years old, rebuilt 1969
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
6,670
2007 count
Owner
State
State Highway Agency

About this bridge

M-120 over Cedar Creek is a concrete tee beam carrying M-120 over Cedar Creek in Muskegon County, Michigan. It was built in 1935 and reconstructed in 1969, so it is 90 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 6,670 vehicles a day, roughly 5% of them trucks, projected to reach 6,993 by 2018. The structure is 28 ft (8.5 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-120
CrossesCedar Creek
Location4.2 MI SW of M-82
RouteState Highway 120
CountyMuskegon County
StateMichigan
Coordinates43.42421, -86.05906
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating56.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width52 ft (15.8 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,670 (2007)
Projected traffic6,993 by 2018
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 M-120 over Cedar Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1969.

What condition is M-120 over Cedar Creek 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 April 2024.

How much traffic does M-120 over Cedar Creek carry?

About 6,670 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is M-120 over Cedar Creek?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 52 ft wide.

Who owns M-120 over Cedar Creek?

It is owned by the State Highway Agency.