US Bridges

S DR So over Pine Creek

FairPosted for load

Calhoun County, Michigan · Athens Twp Sec 21 · Structure no. 000000000001298

Built
1957
68 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
50 ft
1 main span
Daily traffic
865
1995 count
Owner
County
County Highway Agency

About this bridge

S DR So over Pine Creek is a concrete tee beam carrying S DR So over Pine Creek in Calhoun County, Michigan. It was built in 1957, so it is 68 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. Its operating status is: posted for load restriction.

It carries about 865 vehicles a day, roughly 14% of them trucks, projected to reach 1,548 by 2023. The structure is 50 ft (15.2 m) long and 30 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesS DR So
CrossesPine Creek
LocationAthens Twp Sec 21
RouteCounty Highway 1312
CountyCalhoun County
StateMichigan
Coordinates42.11055, -85.25254
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating20.4 US tons
Inventory rating12.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic865 (1995)
Projected traffic1,548 by 2023
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 S DR So over Pine Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is S DR So over Pine 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 September 2023.

How much traffic does S DR So over Pine Creek carry?

About 865 vehicles per day (1995 count), of which roughly 14% are trucks.

How long is S DR So over Pine Creek?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.

Who owns S DR So over Pine Creek?

It is owned by the County Highway Agency.