I-5 over Hill Ditch
FairSkagit County, Washington · 2.1 N Snohomish CO · Structure no. 0008650A0000000
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 122 ft
- 3 main spans
- Daily traffic
- 33,686
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 over Hill Ditch is a concrete continuous slab carrying I-5 over Hill Ditch in Skagit County, Washington. It was built in 1970, so it is 55 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 33,686 vehicles a day, roughly 10% of them trucks, projected to reach 48,545 by 2039. The structure is 122 ft (37.2 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 I-5 over Hill Ditch built?
It was built in 1970, making it 55 years old in 2025.
What condition is I-5 over Hill Ditch in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does I-5 over Hill Ditch carry?
About 33,686 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is I-5 over Hill Ditch?
The structure is 122 ft (37.2 m) long with a longest span of 48 ft (14.6 m) and a deck 56 ft wide.
Who owns I-5 over Hill Ditch?
It is owned by the State Highway Agency.