US Bridges

US-23 over Horseshoe Lake Drain

Fair

Washtenaw County, Michigan · N of Barker RD · Structure no. 000000000013832

Built
1956
69 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
66,750
2017 count
Owner
State
State Highway Agency

About this bridge

US-23 over Horseshoe Lake Drain is a concrete culvert carrying US-23 over Horseshoe Lake Drain in Washtenaw County, Michigan. It was built in 1956, so it is 69 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 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 66,750 vehicles a day, roughly 8% of them trucks, projected to reach 71,150 by 2037. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS-23
CrossesHorseshoe Lake Drain
LocationN of Barker RD
RouteU.S. Route 23
Coordinates42.42414, -83.76843
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length27 ft (8.1 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66,750 (2017)
Projected traffic71,150 by 2037
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-23 over Horseshoe Lake Drain built?

It was built in 1956, making it 69 years old in 2025.

What condition is US-23 over Horseshoe Lake Drain 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 2023.

How much traffic does US-23 over Horseshoe Lake Drain carry?

About 66,750 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is US-23 over Horseshoe Lake Drain?

The structure is 27 ft (8.1 m) long with a longest span of 11 ft (3.5 m).

Who owns US-23 over Horseshoe Lake Drain?

It is owned by the State Highway Agency.