US Bridges

M-120 over Cedar Creek

Fair

Muskegon County, Michigan · 8.6 MI NE of US-31 · Structure no. 000000000007549

Built
1929
96 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
7,230
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 1929, so it is 96 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 5 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 7,230 vehicles a day, roughly 3% of them trucks, projected to reach 14,593 by 2018. The structure is 31 ft (9.4 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-120
CrossesCedar Creek
Location8.6 MI NE of US-31
RouteState Highway 120
CountyMuskegon County
StateMichigan
Coordinates43.38597, -86.12842
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating64.6 US tons
Inventory rating38.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,230 (2007)
Projected traffic14,593 by 2018
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 1929, making it 96 years old in 2025.

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 7,230 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is M-120 over Cedar Creek?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 34 ft wide.

Who owns M-120 over Cedar Creek?

It is owned by the State Highway Agency.