US Bridges

Shelton-Matlock RD over Coffee Creek

Good

Mason County, Washington · 3.6 S JCT SR 102 · Structure no. 0019018A0000000

Built
2020
5 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete
Length
40 ft
1 main span
Daily traffic
1,000
2020 count
Owner
State
State Highway Agency

About this bridge

Shelton-Matlock RD over Coffee Creek is a concrete culvert carrying Shelton-Matlock RD over Coffee Creek in Mason County, Washington. It was built in 2020, so it is 5 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 1,000 vehicles a day, roughly 5% of them trucks, projected to reach 2,000 by 2040. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesShelton-Matlock RD
CrossesCoffee Creek
Location3.6 S JCT SR 102
RouteCounty Highway 101
CountyMason County
StateWashington
Coordinates47.206, -123.12909
Functional classUrban Collector

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.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length40 ft (12.2 m)
Longest span36 ft (11 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic2,000 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$532,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Shelton-Matlock RD over Coffee Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Shelton-Matlock RD over Coffee 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 September 2021.

How much traffic does Shelton-Matlock RD over Coffee Creek carry?

About 1,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Shelton-Matlock RD over Coffee Creek?

The structure is 40 ft (12.2 m) long with a longest span of 36 ft (11 m).

Who owns Shelton-Matlock RD over Coffee Creek?

It is owned by the State Highway Agency.