US Bridges

Lansdowne RD over Williams Lake Canal

Fair

Oakland County, Michigan · N of Hatchery RD · Structure no. 000000000008212

Built
1990
35 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
1,200
2016 count
Owner
County
County Highway Agency

About this bridge

Lansdowne RD over Williams Lake Canal is a prestressed concrete box beam or girders - multiple carrying Lansdowne RD over Williams Lake Canal in Oakland County, Michigan. It was built in 1990, so it is 35 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 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 1,200 vehicles a day, roughly 5% of them trucks, projected to reach 1,325 by 2036. The structure is 25 ft (7.6 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLansdowne RD
CrossesWilliams Lake Canal
LocationN of Hatchery RD
RouteCounty Highway 0
Coordinates42.67534, -83.41674
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 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 alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating32.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2016)
Projected traffic1,325 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Lansdowne RD over Williams Lake Canal built?

It was built in 1990, making it 35 years old in 2025.

What condition is Lansdowne RD over Williams Lake Canal 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 Lansdowne RD over Williams Lake Canal carry?

About 1,200 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Lansdowne RD over Williams Lake Canal?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 37 ft wide.

Who owns Lansdowne RD over Williams Lake Canal?

It is owned by the County Highway Agency.