US Bridges

Shelton Matlock RD over Goldsborough Creek

Good

Mason County, Washington · 4.85 W JCT SR 3 · Structure no. 081924000000000

Built
1956
69 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
122 ft
3 main spans
Daily traffic
2,079
2021 count
Owner
County
County Highway Agency

About this bridge

Shelton Matlock RD over Goldsborough Creek is a concrete continuous slab carrying Shelton Matlock RD over Goldsborough Creek in Mason County, Washington. It was built in 1956, so it is 69 years old, older 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 2,079 vehicles a day, roughly 15% of them trucks, projected to reach 3,300 by 2040. The structure is 122 ft (37.2 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesShelton Matlock RD
CrossesGoldsborough Creek
Location4.85 W JCT SR 3
RouteCounty Highway 90100
Coordinates47.21513, -123.18167
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating19.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length122 ft (37.2 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,079 (2021)
Projected traffic3,300 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Shelton Matlock RD over Goldsborough Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Shelton Matlock RD over Goldsborough 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 April 2023.

How much traffic does Shelton Matlock RD over Goldsborough Creek carry?

About 2,079 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Shelton Matlock RD over Goldsborough Creek?

The structure is 122 ft (37.2 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns Shelton Matlock RD over Goldsborough Creek?

It is owned by the County Highway Agency.