US Bridges

7th Avenue over Goldsbrough Creek

Good

Mason County, Washington · 00.1 S Railroad Ave · Structure no. 084933000000000

Built
1976
49 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
61 ft
1 main span
Daily traffic
6,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

7th Avenue over Goldsbrough Creek is a concrete stringer/multi-beam or girder carrying 7th Avenue over Goldsbrough Creek in Mason County, Washington. It was built in 1976, so it is 49 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 6,000 vehicles a day, roughly 10% of them trucks, projected to reach 11,000 by 2040. The structure is 61 ft (18.6 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries7th Avenue
CrossesGoldsbrough Creek
Location00.1 S Railroad Ave
RouteCity Street 1165
Coordinates47.21167, -123.10781
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39 US tons
Inventory rating30 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span59 ft (18.1 m)
Deck width40 ft (12.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2020)
Projected traffic11,000 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$100,000 (2050 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 7th Avenue over Goldsbrough Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is 7th Avenue over Goldsbrough 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 2023.

How much traffic does 7th Avenue over Goldsbrough Creek carry?

About 6,000 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 7th Avenue over Goldsbrough Creek?

The structure is 61 ft (18.6 m) long with a longest span of 59 ft (18.1 m) and a deck 40 ft wide.

Who owns 7th Avenue over Goldsbrough Creek?

It is owned by the City or Municipal Highway Agency.