US Bridges

Egan HWY over Wamplers Lake Channel

Fair

Lenawee County, Michigan · 1.2 MI N-E of US-12 · Structure no. 000000000005595

Built
1988
37 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
1,208
2011 count
Owner
County
County Highway Agency

About this bridge

Egan HWY over Wamplers Lake Channel is a concrete slab carrying Egan HWY over Wamplers Lake Channel in Lenawee County, Michigan. It was built in 1988, so it is 37 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 1,208 vehicles a day, roughly 1% of them trucks, projected to reach 2,800 by 2031. The structure is 26 ft (7.9 m) long and 31 ft wide. If it were closed, the detour would be 124.3 mi (200 km).

Location

Open in Google Maps
CarriesEgan HWY
CrossesWamplers Lake Channel
Location1.2 MI N-E of US-12
RouteCounty Highway 4639
CountyLenawee County
StateMichigan
Coordinates42.06929, -84.15954
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79 US tons
Inventory rating47.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span21 ft (6.4 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,208 (2011)
Projected traffic2,800 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed124.3 mi (200 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 Egan HWY over Wamplers Lake Channel built?

It was built in 1988, making it 37 years old in 2025.

What condition is Egan HWY over Wamplers Lake Channel 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 January 2025.

How much traffic does Egan HWY over Wamplers Lake Channel carry?

About 1,208 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Egan HWY over Wamplers Lake Channel?

The structure is 26 ft (7.9 m) long with a longest span of 21 ft (6.4 m) and a deck 31 ft wide.

Who owns Egan HWY over Wamplers Lake Channel?

It is owned by the County Highway Agency.