US Bridges

Darr Road over N Br Lincoln River

Good

Mason County, Michigan · 4 MI W of Fountain · Structure no. 000000000006682

Built
2018
7 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
10
2018 count
Owner
County
County Highway Agency

About this bridge

Darr Road over N Br Lincoln River is a prestressed concrete box beam or girders - multiple carrying Darr Road over N Br Lincoln River in Mason County, Michigan. It was built in 2018, so it is 7 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 10 vehicles a day, roughly 5% of them trucks, projected to reach 10 by 2038. The structure is 46 ft (14 m) long and 19 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesDarr Road
CrossesN Br Lincoln River
Location4 MI W of Fountain
RouteCounty Highway 0
Coordinates44.04651, -86.2607
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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.3 US tons
Inventory rating49.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length46 ft (14 m)
Longest span46 ft (14 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic10 by 2038
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Darr Road over N Br Lincoln River built?

It was built in 2018, making it 7 years old in 2025.

What condition is Darr Road over N Br Lincoln 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 April 2023.

How much traffic does Darr Road over N Br Lincoln River carry?

About 10 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Darr Road over N Br Lincoln River?

The structure is 46 ft (14 m) long with a longest span of 46 ft (14 m) and a deck 19 ft wide.

Who owns Darr Road over N Br Lincoln River?

It is owned by the County Highway Agency.