Seward Highway over Placer River Main Cross
GoodAnchorage Municipality, Alaska · Mile Point 77.5 · Structure no. 0629
- Built
- 2023
- 2 years old
- Condition
- Good
- inspected August 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 598 ft
- 5 main spans
- Daily traffic
- 3,900
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Seward Highway over Placer River Main Cross is a prestressed concrete tee beam carrying Seward Highway over Placer River Main Cross in Anchorage Municipality, Alaska. It was built in 2023, so it is 2 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 14% of them trucks, projected to reach 4,650 by 2039. The structure is 598 ft (182.4 m) long and 66 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 Main Cross built?
It was built in 2023, making it 2 years old in 2025.
What condition is Seward Highway over Placer River Main Cross 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 August 2023.
How much traffic does Seward Highway over Placer River Main Cross carry?
About 3,900 vehicles per day (2020 count), of which roughly 14% are trucks.
How long is Seward Highway over Placer River Main Cross?
The structure is 598 ft (182.4 m) long with a longest span of 116 ft (35.5 m) and a deck 66 ft wide.
Who owns Seward Highway over Placer River Main Cross?
It is owned by the State Highway Agency.