US Bridges

20 Mile RD over Rogue River

Fair

Kent County, Michigan · 0.40 MI W of Red Pine Drv · Structure no. 000000000005038

Built
1931
94 years old, rebuilt 2021
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
45 ft
2 main spans
Daily traffic
500
2015 count
Owner
County
County Highway Agency

About this bridge

20 Mile RD over Rogue River is a steel continuous stringer/multi-beam or girder carrying 20 Mile RD over Rogue River in Kent County, Michigan. It was built in 1931 and reconstructed in 2021, so it is 94 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 500 vehicles a day, projected to reach 850 by 2035. The structure is 45 ft (13.7 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries20 Mile RD
CrossesRogue River
Location0.40 MI W of Red Pine Drv
RouteCounty Highway 0
CountyKent County
StateMichigan
Coordinates43.26373, -85.70104
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length45 ft (13.7 m)
Longest span23 ft (6.9 m)
Deck width31 ft (9.3 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2015)
Projected traffic850 by 2035
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 20 Mile RD over Rogue River built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2021.

What condition is 20 Mile RD over Rogue 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 20 Mile RD over Rogue River carry?

About 500 vehicles per day (2015 count).

How long is 20 Mile RD over Rogue River?

The structure is 45 ft (13.7 m) long with a longest span of 23 ft (6.9 m) and a deck 31 ft wide.

Who owns 20 Mile RD over Rogue River?

It is owned by the County Highway Agency.