US Bridges

Lahser RD over Rouge River

Fair

Oakland County, Michigan · Bet 9 and 10 Mile Rds · Structure no. 000000000008147

Built
1983
42 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
17,080
1994 count
Owner
County
County Highway Agency

About this bridge

Lahser RD over Rouge River is a prestressed concrete stringer/multi-beam or girder carrying Lahser RD over Rouge River in Oakland County, Michigan. It was built in 1983, so it is 42 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 17,080 vehicles a day, projected to reach 20,100 by 2014. The structure is 72 ft (21.9 m) long and 80 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesLahser RD
CrossesRouge River
LocationBet 9 and 10 Mile Rds
RouteCounty Highway 2059
CountyOakland County
StateMichigan
Coordinates42.46765, -83.26052
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length72 ft (21.9 m)
Longest span69 ft (21 m)
Deck width80 ft (24.5 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,080 (1994)
Projected traffic20,100 by 2014
Trucks0%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Lahser RD over Rouge River built?

It was built in 1983, making it 42 years old in 2025.

What condition is Lahser RD over Rouge 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 July 2024.

How much traffic does Lahser RD over Rouge River carry?

About 17,080 vehicles per day (1994 count).

How long is Lahser RD over Rouge River?

The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21 m) and a deck 80 ft wide.

Who owns Lahser RD over Rouge River?

It is owned by the County Highway Agency.