US Bridges

M-14 WB over Beechwood Drive

Fair

Washtenaw County, Michigan · In Ann Arbor · Structure no. 000000000010959

Built
1966
59 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
115 ft
3 main spans
Daily traffic
19,982
2014 count
Owner
State
State Highway Agency

About this bridge

M-14 WB over Beechwood Drive is a prestressed concrete stringer/multi-beam or girder carrying M-14 WB over Beechwood Drive in Washtenaw County, Michigan. It was built in 1966, so it is 59 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 19,982 vehicles a day, roughly 9% of them trucks, projected to reach 22,979 by 2034. The structure is 115 ft (34.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-14 WB
CrossesBeechwood Drive
LocationIn Ann Arbor
RouteState Highway 14
CountyWashtenaw County
StateMichigan
Coordinates42.2984, -83.75536
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating56.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length115 ft (34.9 m)
Longest span41 ft (12.4 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,982 (2014)
Projected traffic22,979 by 2034
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M-14 WB over Beechwood Drive built?

It was built in 1966, making it 59 years old in 2025.

What condition is M-14 WB over Beechwood Drive 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 August 2023.

How much traffic does M-14 WB over Beechwood Drive carry?

About 19,982 vehicles per day (2014 count), of which roughly 9% are trucks.

How long is M-14 WB over Beechwood Drive?

The structure is 115 ft (34.9 m) long with a longest span of 41 ft (12.4 m) and a deck 43 ft wide.

Who owns M-14 WB over Beechwood Drive?

It is owned by the State Highway Agency.