US Bridges

County Road I 39 over Rapid River

Good

Delta County, Michigan · 6.5 M N 1 M W Rapid River · Structure no. 000000000002162

Built
2016
9 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
83
2021 count
Owner
County
County Highway Agency

About this bridge

County Road I 39 over Rapid River is a prestressed concrete box beam or girders - multiple carrying County Road I 39 over Rapid River in Delta County, Michigan. It was built in 2016, so it is 9 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 83 vehicles a day, roughly 8% of them trucks, projected to reach 91 by 2041. The structure is 87 ft (26.5 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty Road I 39
CrossesRapid River
Location6.5 M N 1 M W Rapid River
RouteCounty Highway 0
CountyDelta County
StateMichigan
Coordinates46.02247, -86.97892
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating72.1 US tons
Inventory rating55 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length87 ft (26.5 m)
Longest span85 ft (25.9 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83 (2021)
Projected traffic91 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road I 39 over Rapid River built?

It was built in 2016, making it 9 years old in 2025.

What condition is County Road I 39 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 July 2024.

How much traffic does County Road I 39 over Rapid River carry?

About 83 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is County Road I 39 over Rapid River?

The structure is 87 ft (26.5 m) long with a longest span of 85 ft (25.9 m) and a deck 31 ft wide.

Who owns County Road I 39 over Rapid River?

It is owned by the County Highway Agency.