US Bridges

Imperial Hts Road over Spurr River

Good

Baraga County, Michigan · 0.4 MI SW of US-41 · Structure no. 000000000012754

Built
2016
9 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
39 ft
1 main span
Daily traffic
294
2014 count
Owner
County
County Highway Agency

About this bridge

Imperial Hts Road over Spurr River is a concrete culvert carrying Imperial Hts Road over Spurr River in Baraga County, Michigan. It was built in 2016, so it is 9 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 294 vehicles a day, roughly 5% of them trucks, projected to reach 350 by 2034. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesImperial Hts Road
CrossesSpurr River
Location0.4 MI SW of US-41
RouteCounty Highway 785
CountyBaraga County
StateMichigan
Coordinates46.53381, -88.13761
Functional classRural Major Collector

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.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating71.4 US tons
Inventory rating60.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length39 ft (11.9 m)
Longest span36 ft (11 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic294 (2014)
Projected traffic350 by 2034
Trucks5%
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 Imperial Hts Road over Spurr River built?

It was built in 2016, making it 9 years old in 2025.

What condition is Imperial Hts Road over Spurr 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 September 2023.

How much traffic does Imperial Hts Road over Spurr River carry?

About 294 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Imperial Hts Road over Spurr River?

The structure is 39 ft (11.9 m) long with a longest span of 36 ft (11 m).

Who owns Imperial Hts Road over Spurr River?

It is owned by the County Highway Agency.