US Bridges

ST Charles Road over Pine River

Fair

Gratiot County, Michigan · Sec 29-32 Sumner Twp · Structure no. 000000000003141

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
80 ft
2 main spans
Daily traffic
665
2003 count
Owner
County
County Highway Agency

About this bridge

ST Charles Road over Pine River is a prestressed concrete box beam or girders - multiple carrying ST Charles Road over Pine River in Gratiot County, Michigan. It was built in 1967, so it is 58 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 665 vehicles a day, projected to reach 900 by 2023. The structure is 80 ft (24.3 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST Charles Road
CrossesPine River
LocationSec 29-32 Sumner Twp
RouteCounty Highway 2954
CountyGratiot County
StateMichigan
Coordinates43.30677, -84.82546
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.5 US tons
Inventory rating47.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length80 ft (24.3 m)
Longest span39 ft (11.8 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic665 (2003)
Projected traffic900 by 2023
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 ST Charles Road over Pine River built?

It was built in 1967, making it 58 years old in 2025.

What condition is ST Charles Road over Pine 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 June 2023.

How much traffic does ST Charles Road over Pine River carry?

About 665 vehicles per day (2003 count).

How long is ST Charles Road over Pine River?

The structure is 80 ft (24.3 m) long with a longest span of 39 ft (11.8 m) and a deck 30 ft wide.

Who owns ST Charles Road over Pine River?

It is owned by the County Highway Agency.