Boylston Road over Ground Relief
GoodKittitas County, Washington · 03.08 E Prater Road · Structure no. 085964000000000
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected November 2023
- Type
- Slab
- Concrete Continuous
- Length
- 145 ft
- 5 main spans
- Daily traffic
- 155
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Boylston Road over Ground Relief is a concrete continuous slab carrying Boylston Road over Ground Relief in Kittitas County, Washington. It was built in 1968, so it is 57 years old, older than the Washington average of 49.8 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.
It carries about 155 vehicles a day, roughly 37% of them trucks, projected to reach 315 by 2041. The structure is 145 ft (44.2 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Boylston Road over Ground Relief built?
It was built in 1968, making it 57 years old in 2025.
What condition is Boylston Road over Ground Relief 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 November 2023.
How much traffic does Boylston Road over Ground Relief carry?
About 155 vehicles per day (2023 count), of which roughly 37% are trucks.
How long is Boylston Road over Ground Relief?
The structure is 145 ft (44.2 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.
Who owns Boylston Road over Ground Relief?
It is owned by the County Highway Agency.