US Bridges

1 Mile RD over Mile and Half Creek

Good

Ontonagon County, Michigan · 1800 Ft W of Gem Hill RD · Structure no. 000000000014758

Built
2024
1 years old
Condition
Good
inspected September 2024
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
23 ft
1 main span
Daily traffic
400
2024 count
Owner
County
County Highway Agency

About this bridge

1 Mile RD over Mile and Half Creek is a aluminum, wrought iron, or cast iron culvert carrying 1 Mile RD over Mile and Half Creek in Ontonagon County, Michigan. It was built in 2024, so it is 1 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 400 vehicles a day, roughly 2% of them trucks, projected to reach 400 by 2044. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Carries1 Mile RD
CrossesMile and Half Creek
Location1800 Ft W of Gem Hill RD
RouteCounty Highway 0
Coordinates46.54937, -89.14403
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating76.4 US tons
Inventory rating59 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length23 ft (6.9 m)
Longest span23 ft (6.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2024)
Projected traffic400 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 1 Mile RD over Mile and Half Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is 1 Mile RD over Mile and Half Creek 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 September 2024.

How much traffic does 1 Mile RD over Mile and Half Creek carry?

About 400 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is 1 Mile RD over Mile and Half Creek?

The structure is 23 ft (6.9 m) long with a longest span of 23 ft (6.9 m).

Who owns 1 Mile RD over Mile and Half Creek?

It is owned by the County Highway Agency.