US Bridges

North Moore Road over Black River

Fair

Gogebic County, Michigan · Sec 33 Ironwood Twp · Structure no. 000000000003015

Built
1982
43 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
174
1998 count
Owner
County
County Highway Agency

About this bridge

North Moore Road over Black River is a prestressed concrete box beam or girders - multiple carrying North Moore Road over Black River in Gogebic County, Michigan. It was built in 1982, so it is 43 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 174 vehicles a day, projected to reach 174 by 2018. The structure is 69 ft (21 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNorth Moore Road
CrossesBlack River
LocationSec 33 Ironwood Twp
RouteCounty Highway 0
CountyGogebic County
StateMichigan
Coordinates46.51228, -90.05283
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.2 US tons
Inventory rating60.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length69 ft (21 m)
Longest span67 ft (20.4 m)
Deck width31 ft (9.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic174 (1998)
Projected traffic174 by 2018
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$485,000
NavigationNo navigation control on waterway

Frequently asked questions

When was North Moore Road over Black River built?

It was built in 1982, making it 43 years old in 2025.

What condition is North Moore Road over Black 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 September 2024.

How much traffic does North Moore Road over Black River carry?

About 174 vehicles per day (1998 count).

How long is North Moore Road over Black River?

The structure is 69 ft (21 m) long with a longest span of 67 ft (20.4 m) and a deck 31 ft wide.

Who owns North Moore Road over Black River?

It is owned by the County Highway Agency.