US Bridges

Alpine Ave over Unnamed Creek

Fair

Kent County, Michigan · 0.30 MI NE of 12 Mile RD · Structure no. 000000000005047

Built
2007
18 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
70 ft
3 main spans
Daily traffic
2,946
2005 count
Owner
County
County Highway Agency

About this bridge

Alpine Ave over Unnamed Creek is a steel culvert carrying Alpine Ave over Unnamed Creek in Kent County, Michigan. It was built in 2007, so it is 18 years old, younger 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 2,946 vehicles a day, projected to reach 5,010 by 2025. The structure is 70 ft (21.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAlpine Ave
CrossesUnnamed Creek
Location0.30 MI NE of 12 Mile RD
RouteCounty Highway 4119
CountyKent County
StateMichigan
Coordinates43.14913, -85.68532
Functional classRural Major 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating62.5 US tons
Inventory rating60.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length70 ft (21.3 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,946 (2005)
Projected traffic5,010 by 2025
Trucks0%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Alpine Ave over Unnamed Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Alpine Ave over Unnamed Creek 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 September 2024.

How much traffic does Alpine Ave over Unnamed Creek carry?

About 2,946 vehicles per day (2005 count).

How long is Alpine Ave over Unnamed Creek?

The structure is 70 ft (21.3 m) long with a longest span of 7 ft (2.1 m).

Who owns Alpine Ave over Unnamed Creek?

It is owned by the County Highway Agency.