US Bridges

Aarwood Road over Rapid River

Good

Kalkaska County, Michigan · 1.5 MI NW of Rapid City · Structure no. 000000000004702

Built
2012
13 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
108 ft
1 main span
Daily traffic
1,340
2012 count
Owner
County
County Highway Agency

About this bridge

Aarwood Road over Rapid River is a prestressed concrete box beam or girders - single or spread carrying Aarwood Road over Rapid River in Kalkaska County, Michigan. It was built in 2012, so it is 13 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,340 vehicles a day, roughly 5% of them trucks, projected to reach 2,420 by 2032. The structure is 108 ft (32.9 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesAarwood Road
CrossesRapid River
Location1.5 MI NW of Rapid City
RouteCounty Highway 4025
Coordinates44.84562, -85.30733
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.4 US tons
Inventory rating43.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length108 ft (32.9 m)
Longest span105 ft (32 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,340 (2012)
Projected traffic2,420 by 2032
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Aarwood Road over Rapid River built?

It was built in 2012, making it 13 years old in 2025.

What condition is Aarwood Road over Rapid River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Aarwood Road over Rapid River carry?

About 1,340 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Aarwood Road over Rapid River?

The structure is 108 ft (32.9 m) long with a longest span of 105 ft (32 m) and a deck 42 ft wide.

Who owns Aarwood Road over Rapid River?

It is owned by the County Highway Agency.