M Fork RD NF-5600 over Unnamed Tributary
GoodKing County, Washington · 9.81 MI N of I-90 · Structure no. 089121000000000
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected July 2024
- Type
- Tee Beam
- Concrete
- Length
- 80 ft
- 1 main span
- Daily traffic
- 125
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
M Fork RD NF-5600 over Unnamed Tributary is a concrete tee beam carrying M Fork RD NF-5600 over Unnamed Tributary in King County, Washington. It was built in 2014, so it is 11 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 125 vehicles a day, roughly 1% of them trucks, projected to reach 200 by 2040. The structure is 80 ft (24.4 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M Fork RD NF-5600 over Unnamed Tributary built?
It was built in 2014, making it 11 years old in 2025.
What condition is M Fork RD NF-5600 over Unnamed Tributary 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 July 2024.
How much traffic does M Fork RD NF-5600 over Unnamed Tributary carry?
About 125 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is M Fork RD NF-5600 over Unnamed Tributary?
The structure is 80 ft (24.4 m) long with a longest span of 74 ft (22.6 m) and a deck 31 ft wide.
Who owns M Fork RD NF-5600 over Unnamed Tributary?
It is owned by the County Highway Agency.