US Bridges

Arenac State Road over Saganing Creek

Good

Arenac County, Michigan · 0.5 MI West of Saganing · Structure no. 000000000000441

Built
1961
64 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
1,637
1998 count
Owner
County
County Highway Agency

About this bridge

Arenac State Road over Saganing Creek is a prestressed concrete box beam or girders - multiple carrying Arenac State Road over Saganing Creek in Arenac County, Michigan. It was built in 1961, so it is 64 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,637 vehicles a day, projected to reach 810 by 1977. The structure is 60 ft (18.2 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesArenac State Road
CrossesSaganing Creek
Location0.5 MI West of Saganing
RouteCounty Highway 645
CountyArenac County
StateMichigan
Coordinates43.93281, -83.92254
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72.1 US tons
Inventory rating42.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length60 ft (18.2 m)
Longest span55 ft (16.7 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,637 (1998)
Projected traffic810 by 1977
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Arenac State Road over Saganing Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Arenac State Road over Saganing 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 August 2024.

How much traffic does Arenac State Road over Saganing Creek carry?

About 1,637 vehicles per day (1998 count).

How long is Arenac State Road over Saganing Creek?

The structure is 60 ft (18.2 m) long with a longest span of 55 ft (16.7 m) and a deck 28 ft wide.

Who owns Arenac State Road over Saganing Creek?

It is owned by the County Highway Agency.