Seward Highway over Placer River Overflow
GoodAnchorage Municipality, Alaska · Mile Point 77.0 · Structure no. 0627
- Built
- 2022
- 3 years old
- Condition
- Good
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 375 ft
- 3 main spans
- Daily traffic
- 3,900
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Seward Highway over Placer River Overflow is a prestressed concrete tee beam carrying Seward Highway over Placer River Overflow in Anchorage Municipality, Alaska. It was built in 2022, so it is 3 years old, younger than the Alaska average of 35.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 3,900 vehicles a day, roughly 15% of them trucks, projected to reach 8,666 by 2039. The structure is 375 ft (114.3 m) long and 54 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 | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | No problems noted. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Seward Highway over Placer River Overflow built?
It was built in 2022, making it 3 years old in 2025.
What condition is Seward Highway over Placer River Overflow 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 June 2023.
How much traffic does Seward Highway over Placer River Overflow carry?
About 3,900 vehicles per day (2020 count), of which roughly 15% are trucks.
How long is Seward Highway over Placer River Overflow?
The structure is 375 ft (114.3 m) long with a longest span of 122 ft (37.2 m) and a deck 54 ft wide.
Who owns Seward Highway over Placer River Overflow?
It is owned by the State Highway Agency.