Trappers Bay ST Pk over Silver Lake Causeway
GoodDickinson County, Iowa · In Trappers Bay St.Park · Structure no. 000000000699221
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected September 2024
- Type
- Channel Beam
- Prestressed Concrete
- Length
- 28 ft
- 1 main span
- Daily traffic
- —
- 2022 count
- Owner
- State
- State Park, Forest, or Reservation Agency
About this bridge
Trappers Bay ST Pk over Silver Lake Causeway is a prestressed concrete channel beam carrying Trappers Bay ST Pk over Silver Lake Causeway in Dickinson County, Iowa. It was built in 1984, so it is 41 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
No traffic count is recorded. The structure is 28 ft (8.5 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Trappers Bay ST Pk over Silver Lake Causeway built?
It was built in 1984, making it 41 years old in 2025.
What condition is Trappers Bay ST Pk over Silver Lake Causeway in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.
How much traffic does Trappers Bay ST Pk over Silver Lake Causeway carry?
No traffic count is recorded for this structure.
How long is Trappers Bay ST Pk over Silver Lake Causeway?
The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 22 ft wide.
Who owns Trappers Bay ST Pk over Silver Lake Causeway?
It is owned by the State Park, Forest, or Reservation Agency.