Local - 620th over Waterway
PoorPosted for loadCass County, Iowa · 074363302 · Structure no. 000000000097381
- Built
- 1977
- 48 years old
- Condition
- Poor
- inspected March 2024
- Type
- Truss - Thru
- Steel
- Length
- 75 ft
- 1 main span
- Daily traffic
- 15
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Local - 620th over Waterway is a steel truss - thru carrying Local - 620th over Waterway in Cass County, Iowa. It was built in 1977, so it is 48 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 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 15 vehicles a day, projected to reach 15 by 2044. The structure is 75 ft (22.9 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Local - 620th over Waterway built?
It was built in 1977, making it 48 years old in 2025.
What condition is Local - 620th over Waterway 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 - 620th over Waterway carry?
About 15 vehicles per day (2022 count).
How long is Local - 620th over Waterway?
The structure is 75 ft (22.9 m) long with a longest span of 70 ft (21.3 m) and a deck 20 ft wide.
Who owns Local - 620th over Waterway?
It is owned by the County Highway Agency.