Main St-Whitmore over Horseshoe Lake Outlet
PoorWashtenaw County, Michigan · Northfield Twp Sec 5 · Structure no. 000000000010999
- Built
- 1920
- 105 years old
- Condition
- Poor
- inspected June 2023
- Type
- Tee Beam
- Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 5,803
- 2005 count
- Owner
- County
- County Highway Agency
About this bridge
Main St-Whitmore over Horseshoe Lake Outlet is a concrete tee beam carrying Main St-Whitmore over Horseshoe Lake Outlet in Washtenaw County, Michigan. It was built in 1920, so it is 105 years old, older than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 5,803 vehicles a day, roughly 12% of them trucks, projected to reach 10,480 by 2025. The structure is 30 ft (9.1 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main St-Whitmore over Horseshoe Lake Outlet built?
It was built in 1920, making it 105 years old in 2025.
What condition is Main St-Whitmore over Horseshoe Lake Outlet in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.
How much traffic does Main St-Whitmore over Horseshoe Lake Outlet carry?
About 5,803 vehicles per day (2005 count), of which roughly 12% are trucks.
How long is Main St-Whitmore over Horseshoe Lake Outlet?
The structure is 30 ft (9.1 m) long with a longest span of 26 ft (7.9 m) and a deck 36 ft wide.
Who owns Main St-Whitmore over Horseshoe Lake Outlet?
It is owned by the County Highway Agency.