Marquis RD over Shell Rock Riv Overflow
PoorPosted for loadBlack Hawk County, Iowa · 90-14-04-07-10 · Structure no. 000000000076741
- Built
- 1992
- 33 years old
- Condition
- Poor
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 57 ft
- 3 main spans
- Daily traffic
- 207
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Marquis RD over Shell Rock Riv Overflow is a wood or timber stringer/multi-beam or girder carrying Marquis RD over Shell Rock Riv Overflow in Black Hawk County, Iowa. It was built in 1992, so it is 33 years old, younger 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 other load-capacity restriction.
It carries about 207 vehicles a day, roughly 7% of them trucks, projected to reach 207 by 2044. The structure is 57 ft (17.4 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 4 Poor | Advanced section loss, deterioration, 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Marquis RD over Shell Rock Riv Overflow built?
It was built in 1992, making it 33 years old in 2025.
What condition is Marquis RD over Shell Rock Riv Overflow 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 April 2024.
How much traffic does Marquis RD over Shell Rock Riv Overflow carry?
About 207 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is Marquis RD over Shell Rock Riv Overflow?
The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 17 ft wide.
Who owns Marquis RD over Shell Rock Riv Overflow?
It is owned by the County Highway Agency.