US Bridges

Boyce Road over Tributary to Joslin Lake

Fair

Washtenaw County, Michigan · Lyndon Twp Sec 9 · Structure no. 000000000013259

Built
2004
21 years old
Condition
Fair
inspected July 2023
Type
Slab
Wood or Timber
Length
22 ft
1 main span
Daily traffic
100
2004 count
Owner
County
County Highway Agency

About this bridge

Boyce Road over Tributary to Joslin Lake is a wood or timber slab carrying Boyce Road over Tributary to Joslin Lake in Washtenaw County, Michigan. It was built in 2004, so it is 21 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 100 vehicles a day, projected to reach 181 by 2024. The structure is 22 ft (6.7 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBoyce Road
CrossesTributary to Joslin Lake
LocationLyndon Twp Sec 9
RouteCounty Highway 0
CountyWashtenaw County
StateMichigan
Coordinates42.40706, -84.07742
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.9 US tons
Inventory rating57.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2004)
Projected traffic181 by 2024
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Boyce Road over Tributary to Joslin Lake built?

It was built in 2004, making it 21 years old in 2025.

What condition is Boyce Road over Tributary to Joslin Lake 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 2023.

How much traffic does Boyce Road over Tributary to Joslin Lake carry?

About 100 vehicles per day (2004 count).

How long is Boyce Road over Tributary to Joslin Lake?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 32 ft wide.

Who owns Boyce Road over Tributary to Joslin Lake?

It is owned by the County Highway Agency.