US Bridges

ST Charles Road over Pine River

Fair

Gratiot County, Michigan · Sec 27-34 Sumner Twp · Structure no. 000000000003142

Built
1925
100 years old
Condition
Fair
inspected June 2024
Type
Girder and Floorbeam System
Concrete
Length
90 ft
1 main span
Daily traffic
610
2003 count
Owner
County
County Highway Agency

About this bridge

ST Charles Road over Pine River is a concrete girder and floorbeam system carrying ST Charles Road over Pine River in Gratiot County, Michigan. It was built in 1925, so it is 100 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.

It carries about 610 vehicles a day, projected to reach 820 by 2023. The structure is 90 ft (27.4 m) long and 26 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 27-34 Sumner Twp
RouteCounty Highway 2954
CountyGratiot County
StateMichigan
Coordinates43.30675, -84.78338
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating15 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length90 ft (27.4 m)
Longest span85 ft (25.9 m)
Deck width26 ft (7.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic610 (2003)
Projected traffic820 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$320,000
NavigationNo navigation control on waterway

Frequently asked questions

When was ST Charles Road over Pine River built?

It was built in 1925, making it 100 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 2024.

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

About 610 vehicles per day (2003 count).

How long is ST Charles Road over Pine River?

The structure is 90 ft (27.4 m) long with a longest span of 85 ft (25.9 m) and a deck 26 ft wide.

Who owns ST Charles Road over Pine River?

It is owned by the County Highway Agency.