US Bridges

M-13 over Saganing Creek

Fair

Arenac County, Michigan · 4.0 MI S of Standish · Structure no. 000000000000383

Built
1937
88 years old, rebuilt 1998
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
82 ft
3 main spans
Daily traffic
7,706
2007 count
Owner
State
State Highway Agency

About this bridge

M-13 over Saganing Creek is a prestressed concrete box beam or girders - multiple carrying M-13 over Saganing Creek in Arenac County, Michigan. It was built in 1937 and reconstructed in 1998, so it is 88 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 7,706 vehicles a day, roughly 6% of them trucks, projected to reach 8,753 by 2018. The structure is 82 ft (25.1 m) long and 70 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-13
CrossesSaganing Creek
Location4.0 MI S of Standish
RouteState Highway 13
CountyArenac County
StateMichigan
Coordinates43.92666, -83.96653
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.1 US tons
Inventory rating48.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length82 ft (25.1 m)
Longest span32 ft (9.7 m)
Deck width70 ft (21.3 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,706 (2007)
Projected traffic8,753 by 2018
Trucks6%
Lanes on structure4
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-13 over Saganing Creek built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1998.

What condition is M-13 over Saganing 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 June 2024.

How much traffic does M-13 over Saganing Creek carry?

About 7,706 vehicles per day (2007 count), of which roughly 6% are trucks.

How long is M-13 over Saganing Creek?

The structure is 82 ft (25.1 m) long with a longest span of 32 ft (9.7 m) and a deck 70 ft wide.

Who owns M-13 over Saganing Creek?

It is owned by the State Highway Agency.