US Bridges

Prarie Road over Pine River

Fair

Chippewa County, Michigan · 3 MI S of Rudyard · Structure no. 000000000001634

Built
1986
39 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
120 ft
3 main spans
Daily traffic
14
1986 count
Owner
County
County Highway Agency

About this bridge

Prarie Road over Pine River is a steel continuous stringer/multi-beam or girder carrying Prarie Road over Pine River in Chippewa County, Michigan. It was built in 1986, so it is 39 years old, younger 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 14 vehicles a day, projected to reach 25 by 2019. The structure is 120 ft (36.5 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPrarie Road
CrossesPine River
Location3 MI S of Rudyard
RouteCounty Highway 1726
CountyChippewa County
StateMichigan
Coordinates46.19059, -84.61175
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.
Superstructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.8 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.5 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14 (1986)
Projected traffic25 by 2019
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 Prarie Road over Pine River built?

It was built in 1986, making it 39 years old in 2025.

What condition is Prarie 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 Prarie Road over Pine River carry?

About 14 vehicles per day (1986 count).

How long is Prarie Road over Pine River?

The structure is 120 ft (36.5 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns Prarie Road over Pine River?

It is owned by the County Highway Agency.