J-28 / 170th ST over Tarkio Creek
PoorPosted for loadPage County, Iowa · 069381101 · Structure no. 000000000266960
- Built
- 1956
- 69 years old
- Condition
- Poor
- inspected November 2022
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 178 ft
- 3 main spans
- Daily traffic
- 60
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
J-28 / 170th ST over Tarkio Creek is a steel continuous stringer/multi-beam or girder carrying J-28 / 170th ST over Tarkio Creek in Page County, Iowa. It was built in 1956, so it is 69 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. Its operating status is: posted for load restriction.
It carries about 60 vehicles a day, projected to reach 60 by 2042. The structure is 178 ft (54.3 m) long and 22 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 J-28 / 170th ST over Tarkio Creek built?
It was built in 1956, making it 69 years old in 2025.
What condition is J-28 / 170th ST over Tarkio Creek 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 November 2022.
How much traffic does J-28 / 170th ST over Tarkio Creek carry?
About 60 vehicles per day (2022 count).
How long is J-28 / 170th ST over Tarkio Creek?
The structure is 178 ft (54.3 m) long with a longest span of 68 ft (20.7 m) and a deck 22 ft wide.
Who owns J-28 / 170th ST over Tarkio Creek?
It is owned by the County Highway Agency.