Local - 670th over Lone Tree Branch
PoorCass County, Iowa · 075350502 · Structure no. 000000000098081
- Built
- 1978
- 47 years old
- Condition
- Poor
- inspected March 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 42 ft
- 1 main span
- Daily traffic
- 21
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Local - 670th over Lone Tree Branch is a prestressed concrete tee beam carrying Local - 670th over Lone Tree Branch in Cass County, Iowa. It was built in 1978, so it is 47 years old, older than the Iowa average of 45.5 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 21 vehicles a day, roughly 38% of them trucks, projected to reach 21 by 2044. The structure is 42 ft (12.8 m) long and 25 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 Local - 670th over Lone Tree Branch built?
It was built in 1978, making it 47 years old in 2025.
What condition is Local - 670th over Lone Tree Branch 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 March 2024.
How much traffic does Local - 670th over Lone Tree Branch carry?
About 21 vehicles per day (2022 count), of which roughly 38% are trucks.
How long is Local - 670th over Lone Tree Branch?
The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 25 ft wide.
Who owns Local - 670th over Lone Tree Branch?
It is owned by the County Highway Agency.