US Bridges

18 Mile RD over Rogue River

Good

Kent County, Michigan · 0.20 MI E of Afton Ave · Structure no. 000000000005036

Built
2023
2 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
2 main spans
Daily traffic
925
2022 count
Owner
County
County Highway Agency

About this bridge

18 Mile RD over Rogue River is a steel stringer/multi-beam or girder carrying 18 Mile RD over Rogue River in Kent County, Michigan. It was built in 2023, so it is 2 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 925 vehicles a day, roughly 8% of them trucks, projected to reach 1,275 by 2042. The structure is 75 ft (23 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries18 Mile RD
CrossesRogue River
Location0.20 MI E of Afton Ave
RouteCounty Highway 0
CountyKent County
StateMichigan
Coordinates43.23442, -85.698
Functional classRural Minor 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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating104.3 US tons
Inventory rating80.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length75 ft (23 m)
Longest span38 ft (11.5 m)
Deck width39 ft (11.9 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic925 (2022)
Projected traffic1,275 by 2042
Trucks8%
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 18 Mile RD over Rogue River built?

It was built in 2023, making it 2 years old in 2025.

What condition is 18 Mile RD over Rogue 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 October 2024.

How much traffic does 18 Mile RD over Rogue River carry?

About 925 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is 18 Mile RD over Rogue River?

The structure is 75 ft (23 m) long with a longest span of 38 ft (11.5 m) and a deck 39 ft wide.

Who owns 18 Mile RD over Rogue River?

It is owned by the County Highway Agency.