US 101 over Matlock RD
PoorMason County, Washington · 3.4 S JCT SR 102 · Structure no. 0009361C0000000
- Built
- 1973
- 52 years old
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 207 ft
- 3 main spans
- Daily traffic
- 18,182
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 101 over Matlock RD is a prestressed concrete continuous stringer/multi-beam or girder carrying US 101 over Matlock RD in Mason County, Washington. It was built in 1973, so it is 52 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 18,182 vehicles a day, roughly 8% of them trucks, projected to reach 23,820 by 2039. The structure is 207 ft (63.1 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 101 over Matlock RD built?
It was built in 1973, making it 52 years old in 2025.
What condition is US 101 over Matlock RD in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does US 101 over Matlock RD carry?
About 18,182 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is US 101 over Matlock RD?
The structure is 207 ft (63.1 m) long with a longest span of 91 ft (27.7 m) and a deck 43 ft wide.
Who owns US 101 over Matlock RD?
It is owned by the State Highway Agency.