US Bridges

M-27|N Straits HWY over Mullett Creek

Good

Cheboygan County, Michigan · 2.2 MI N of Topinabee · Structure no. 000000000001491

Built
2004
21 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
3,024
2007 count
Owner
State
State Highway Agency

About this bridge

M-27|N Straits HWY over Mullett Creek is a prestressed concrete box beam or girders - single or spread carrying M-27|N Straits HWY over Mullett Creek in Cheboygan County, Michigan. It was built in 2004, so it is 21 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,024 vehicles a day, roughly 12% of them trucks, projected to reach 4,010 by 2018. The structure is 55 ft (16.8 m) long and 47 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesM-27|N Straits HWY
CrossesMullett Creek
Location2.2 MI N of Topinabee
RouteState Highway 27
Coordinates45.50752, -84.56401
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59.6 US tons
Inventory rating41.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length55 ft (16.8 m)
Longest span53 ft (16.2 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,024 (2007)
Projected traffic4,010 by 2018
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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-27|N Straits HWY over Mullett Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is M-27|N Straits HWY over Mullett Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does M-27|N Straits HWY over Mullett Creek carry?

About 3,024 vehicles per day (2007 count), of which roughly 12% are trucks.

How long is M-27|N Straits HWY over Mullett Creek?

The structure is 55 ft (16.8 m) long with a longest span of 53 ft (16.2 m) and a deck 47 ft wide.

Who owns M-27|N Straits HWY over Mullett Creek?

It is owned by the State Highway Agency.