US Bridges

9 Mile Road over Pine River

Fair

Midland County, Michigan · 0.3 MI S of Pine River RD · Structure no. 000000000006947

Built
2000
25 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
156 ft
2 main spans
Daily traffic
448
2022 count
Owner
County
County Highway Agency

About this bridge

9 Mile Road over Pine River is a prestressed concrete box beam or girders - single or spread carrying 9 Mile Road over Pine River in Midland County, Michigan. It was built in 2000, so it is 25 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 448 vehicles a day, roughly 5% of them trucks, projected to reach 706 by 2043. The structure is 156 ft (47.5 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries9 Mile Road
CrossesPine River
Location0.3 MI S of Pine River RD
RouteCounty Highway 0
CountyMidland County
StateMichigan
Coordinates43.53587, -84.42926
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating76.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length156 ft (47.5 m)
Longest span78 ft (23.7 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic448 (2022)
Projected traffic706 by 2043
Trucks5%
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 9 Mile Road over Pine River built?

It was built in 2000, making it 25 years old in 2025.

What condition is 9 Mile 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 October 2024.

How much traffic does 9 Mile Road over Pine River carry?

About 448 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 9 Mile Road over Pine River?

The structure is 156 ft (47.5 m) long with a longest span of 78 ft (23.7 m) and a deck 34 ft wide.

Who owns 9 Mile Road over Pine River?

It is owned by the County Highway Agency.