Mason Ave over Stream
PoorPosted for loadWoodbury County, Iowa · 089420804 · Structure no. 000000000354570
- Built
- 1970
- 55 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 35 ft
- 2 main spans
- Daily traffic
- 5
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Mason Ave over Stream is a steel continuous stringer/multi-beam or girder carrying Mason Ave over Stream in Woodbury County, Iowa. It was built in 1970, so it is 55 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 5 vehicles a day, projected to reach 5 by 2044. The structure is 35 ft (10.7 m) long and 24 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Mason Ave over Stream built?
It was built in 1970, making it 55 years old in 2025.
What condition is Mason Ave over Stream 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 July 2024.
How much traffic does Mason Ave over Stream carry?
About 5 vehicles per day (2022 count).
How long is Mason Ave over Stream?
The structure is 35 ft (10.7 m) long with a longest span of 17 ft (5.2 m) and a deck 24 ft wide.
Who owns Mason Ave over Stream?
It is owned by the County Highway Agency.