Harmon Drive over Mitchell Lk
PoorPosted for loadDavison County, South Dakota · 2.1W & 4.0N of Mitchell · Structure no. 000000018129060
- Built
- 2000
- 25 years old
- Condition
- Poor
- inspected May 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 45 ft
- 1 main span
- Daily traffic
- 350
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Harmon Drive over Mitchell Lk is a prestressed concrete tee beam carrying Harmon Drive over Mitchell Lk in Davison County, South Dakota. It was built in 2000, so it is 25 years old, younger than the South Dakota average of 48.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 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. Its operating status is: posted for load restriction.
It carries about 350 vehicles a day, roughly 1% of them trucks, projected to reach 350 by 2032. The structure is 45 ft (13.7 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Harmon Drive over Mitchell Lk built?
It was built in 2000, making it 25 years old in 2025.
What condition is Harmon Drive over Mitchell Lk 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 May 2024.
How much traffic does Harmon Drive over Mitchell Lk carry?
About 350 vehicles per day (2022 count), of which roughly 1% are trucks.
How long is Harmon Drive over Mitchell Lk?
The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 31 ft wide.
Who owns Harmon Drive over Mitchell Lk?
It is owned by the City or Municipal Highway Agency.