US Bridges

Silver River Road over Silver River

Good

Baraga County, Michigan · 5 MI SE of Lanse · Structure no. 000000000000523

Built
2005
20 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
68
2015 count
Owner
County
County Highway Agency

About this bridge

Silver River Road over Silver River is a prestressed concrete box beam or girders - multiple carrying Silver River Road over Silver River in Baraga County, Michigan. It was built in 2005, so it is 20 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 68 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2035. The structure is 45 ft (13.7 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesSilver River Road
CrossesSilver River
Location5 MI SE of Lanse
RouteCounty Highway 0
Coordinates46.7326, -88.34088
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating77.8 US tons
Inventory rating46.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span41 ft (12.5 m)
Deck width31 ft (9.6 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68 (2015)
Projected traffic100 by 2035
Trucks3%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Silver River Road over Silver River built?

It was built in 2005, making it 20 years old in 2025.

What condition is Silver River Road over Silver 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 Silver River Road over Silver River carry?

About 68 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Silver River Road over Silver River?

The structure is 45 ft (13.7 m) long with a longest span of 41 ft (12.5 m) and a deck 31 ft wide.

Who owns Silver River Road over Silver River?

It is owned by the County Highway Agency.