US Bridges

T DR So over ST Joseph River

Fair

Calhoun County, Michigan · Tekonsha Twp Sec 26 · Structure no. 000000000001296

Built
1963
62 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
1,110
1995 count
Owner
County
County Highway Agency

About this bridge

T DR So over ST Joseph River is a prestressed concrete box beam or girders - multiple carrying T DR So over ST Joseph River in Calhoun County, Michigan. It was built in 1963, so it is 62 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 1,110 vehicles a day, roughly 14% of them trucks, projected to reach 1,986 by 2023. The structure is 100 ft (30.4 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesT DR So
CrossesST Joseph River
LocationTekonsha Twp Sec 26
RouteCounty Highway 1308
CountyCalhoun County
StateMichigan
Coordinates42.10183, -84.97095
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.6 US tons
Inventory rating36.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadH 20
Structure length100 ft (30.4 m)
Longest span50 ft (15.2 m)
Deck width32 ft (9.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,110 (1995)
Projected traffic1,986 by 2023
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 T DR So over ST Joseph River built?

It was built in 1963, making it 62 years old in 2025.

What condition is T DR So over ST Joseph River 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 T DR So over ST Joseph River carry?

About 1,110 vehicles per day (1995 count), of which roughly 14% are trucks.

How long is T DR So over ST Joseph River?

The structure is 100 ft (30.4 m) long with a longest span of 50 ft (15.2 m) and a deck 32 ft wide.

Who owns T DR So over ST Joseph River?

It is owned by the County Highway Agency.