US Bridges

Beacon Lane over Johnson Creek

Fair

Washtenaw County, Michigan · Salem Twp Sec 15 · Structure no. 000000000014387

Built
1985
40 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
23 ft
4 main spans
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Beacon Lane over Johnson Creek is a concrete culvert carrying Beacon Lane over Johnson Creek in Washtenaw County, Michigan. It was built in 1985, so it is 40 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 50 vehicles a day, projected to reach 100 by 2040. The structure is 23 ft (7.1 m) long. If it were closed, the detour would be 198.8 mi (320 km).

Location

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CarriesBeacon Lane
CrossesJohnson Creek
LocationSalem Twp Sec 15
RouteCounty Highway 0
CountyWashtenaw County
StateMichigan
Coordinates42.3964, -83.6011
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length23 ft (7.1 m)
Longest span5 ft (1.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic100 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed198.8 mi (320 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 Beacon Lane over Johnson Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Beacon Lane over Johnson Creek 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 Beacon Lane over Johnson Creek carry?

About 50 vehicles per day (2020 count).

How long is Beacon Lane over Johnson Creek?

The structure is 23 ft (7.1 m) long with a longest span of 5 ft (1.6 m).

Who owns Beacon Lane over Johnson Creek?

It is owned by the County Highway Agency.