US Bridges

Bolling Road over Gosnell Creek

Good

Mason County, Washington · 0.23 S JCT Cloquallum RD · Structure no. 087098000000000

Built
2003
22 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
36
2020 count
Owner
County
County Highway Agency

About this bridge

Bolling Road over Gosnell Creek is a steel stringer/multi-beam or girder carrying Bolling Road over Gosnell Creek in Mason County, Washington. It was built in 2003, so it is 22 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 36 vehicles a day, roughly 5% of them trucks, projected to reach 50 by 2040. The structure is 41 ft (12.4 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesBolling Road
CrossesGosnell Creek
Location0.23 S JCT Cloquallum RD
RouteCounty Highway 10510
Coordinates47.15725, -123.16992
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating61 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span39 ft (11.9 m)
Deck width20 ft (6.1 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36 (2020)
Projected traffic50 by 2040
Trucks5%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Bolling Road over Gosnell Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is Bolling Road over Gosnell 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 May 2024.

How much traffic does Bolling Road over Gosnell Creek carry?

About 36 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Bolling Road over Gosnell Creek?

The structure is 41 ft (12.4 m) long with a longest span of 39 ft (11.9 m) and a deck 20 ft wide.

Who owns Bolling Road over Gosnell Creek?

It is owned by the County Highway Agency.