US Bridges

M-28 over Star Creek

Fair

Alger County, Michigan · 3.4 MI E of Shingleton · Structure no. 000000000000052

Built
1947
78 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
49 ft
1 main span
Daily traffic
1,973
2007 count
Owner
State
State Highway Agency

About this bridge

M-28 over Star Creek is a steel stringer/multi-beam or girder carrying M-28 over Star Creek in Alger County, Michigan. It was built in 1947, so it is 78 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 1,973 vehicles a day, roughly 13% of them trucks, projected to reach 3,096 by 2018. The structure is 49 ft (14.9 m) long and 43 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesM-28
CrossesStar Creek
Location3.4 MI E of Shingleton
RouteState Highway 28
CountyAlger County
StateMichigan
Coordinates46.34691, -86.40087
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span48 ft (14.5 m)
Deck width43 ft (13.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,973 (2007)
Projected traffic3,096 by 2018
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 M-28 over Star Creek built?

It was built in 1947, making it 78 years old in 2025.

What condition is M-28 over Star 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 May 2024.

How much traffic does M-28 over Star Creek carry?

About 1,973 vehicles per day (2007 count), of which roughly 13% are trucks.

How long is M-28 over Star Creek?

The structure is 49 ft (14.9 m) long with a longest span of 48 ft (14.5 m) and a deck 43 ft wide.

Who owns M-28 over Star Creek?

It is owned by the State Highway Agency.