US Bridges

N Down River RD over N Br Au Sable River

Fair

Crawford County, Michigan · 9.0 MI SE of Lovells · Structure no. 000000000002061

Built
1964
61 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
287
1985 count
Owner
County
County Highway Agency

About this bridge

N Down River RD over N Br Au Sable River is a prestressed concrete box beam or girders - multiple carrying N Down River RD over N Br Au Sable River in Crawford County, Michigan. It was built in 1964, so it is 61 years old, older 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 5 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 287 vehicles a day, roughly 5% of them trucks, projected to reach 400 by 2010. The structure is 50 ft (15.2 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesN Down River RD
CrossesN Br Au Sable River
Location9.0 MI SE of Lovells
RouteCounty Highway 2054
Coordinates44.71662, -84.41987
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating98.2 US tons
Inventory rating59 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span47 ft (14.3 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic287 (1985)
Projected traffic400 by 2010
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N Down River RD over N Br Au Sable River built?

It was built in 1964, making it 61 years old in 2025.

What condition is N Down River RD over N Br Au Sable 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 October 2024.

How much traffic does N Down River RD over N Br Au Sable River carry?

About 287 vehicles per day (1985 count), of which roughly 5% are trucks.

How long is N Down River RD over N Br Au Sable River?

The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.3 m) and a deck 31 ft wide.

Who owns N Down River RD over N Br Au Sable River?

It is owned by the County Highway Agency.