US Bridges

US 101 over Matriotti Creek

Good

Clallam County, Washington · 14.6 E JCT SR 117 · Structure no. 0019020A0000000

Built
2017
8 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
10,727
2023 count
Owner
State
State Highway Agency

About this bridge

US 101 over Matriotti Creek is a concrete culvert carrying US 101 over Matriotti Creek in Clallam County, Washington. It was built in 2017, so it is 8 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 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 10,727 vehicles a day, roughly 5% of them trucks, projected to reach 13,477 by 2039. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 101
CrossesMatriotti Creek
Location14.6 E JCT SR 117
RouteState Highway 101
Coordinates48.08058, -123.17958
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating53.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,727 (2023)
Projected traffic13,477 by 2039
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 101 over Matriotti Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is US 101 over Matriotti Creek 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 February 2024.

How much traffic does US 101 over Matriotti Creek carry?

About 10,727 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US 101 over Matriotti Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns US 101 over Matriotti Creek?

It is owned by the State Highway Agency.