US Bridges

County Road I 14 over Rapid River

Fair

Delta County, Michigan · 5.0 M N 1 M E Rapid River · Structure no. 000000000002163

Built
1940
85 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
46 ft
1 main span
Daily traffic
111
2022 count
Owner
County
County Highway Agency

About this bridge

County Road I 14 over Rapid River is a concrete slab carrying County Road I 14 over Rapid River in Delta County, Michigan. It was built in 1940, so it is 85 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 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 111 vehicles a day, roughly 10% of them trucks, projected to reach 122 by 2042. The structure is 46 ft (14 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty Road I 14
CrossesRapid River
Location5.0 M N 1 M E Rapid River
RouteCounty Highway 0
CountyDelta County
StateMichigan
Coordinates45.99972, -86.95294
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.2 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length46 ft (14 m)
Longest span44 ft (13.4 m)
Deck width24 ft (7.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic111 (2022)
Projected traffic122 by 2042
Trucks10%
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$30,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road I 14 over Rapid River built?

It was built in 1940, making it 85 years old in 2025.

What condition is County Road I 14 over Rapid 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 County Road I 14 over Rapid River carry?

About 111 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is County Road I 14 over Rapid River?

The structure is 46 ft (14 m) long with a longest span of 44 ft (13.4 m) and a deck 24 ft wide.

Who owns County Road I 14 over Rapid River?

It is owned by the County Highway Agency.