Ia 12 over BNSF Rvr Sts & Ia 376
PoorPosted for loadWoodbury County, Iowa · 0.1 MI W of Jct. Ia 376 · Structure no. 000000000052830
- Built
- 1936
- 89 years old, rebuilt 1967
- Condition
- Poor
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 3,970 ft
- 57 main spans
- Daily traffic
- 20,600
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 12 over BNSF Rvr Sts & Ia 376 is a steel continuous stringer/multi-beam or girder carrying Ia 12 over BNSF Rvr Sts & Ia 376 in Woodbury County, Iowa. It was built in 1936 and reconstructed in 1967, so it is 89 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 20,600 vehicles a day, roughly 2% of them trucks, projected to reach 20,600 by 2043. The structure is 3,970 ft (1,210.1 m) long and 63 ft wide.
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 Ia 12 over BNSF Rvr Sts & Ia 376 built?
It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1967.
What condition is Ia 12 over BNSF Rvr Sts & Ia 376 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 2023.
How much traffic does Ia 12 over BNSF Rvr Sts & Ia 376 carry?
About 20,600 vehicles per day (2021 count), of which roughly 2% are trucks.
How long is Ia 12 over BNSF Rvr Sts & Ia 376?
The structure is 3,970 ft (1,210.1 m) long with a longest span of 127 ft (38.7 m) and a deck 63 ft wide.
Who owns Ia 12 over BNSF Rvr Sts & Ia 376?
It is owned by the State Highway Agency.