US Bridges

Malaga Alcoa HWY over Squilchuck Creek

Good

Chelan County, Washington · 620 from S.Wenatchee Ave · Structure no. 088907000000000

Built
1954
71 years old
Condition
Good
inspected September 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
21 ft
1 main span
Daily traffic
7,038
2019 count
Owner
County
County Highway Agency

About this bridge

Malaga Alcoa HWY over Squilchuck Creek is a aluminum, wrought iron, or cast iron culvert carrying Malaga Alcoa HWY over Squilchuck Creek in Chelan County, Washington. It was built in 1954, so it is 71 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 7,038 vehicles a day, roughly 9% of them trucks, projected to reach 8,803 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMalaga Alcoa HWY
CrossesSquilchuck Creek
Location620 from S.Wenatchee Ave
RouteCounty Highway 11300
Coordinates47.39482, -120.29535
Functional classUrban Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating106.8 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadH 20
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 traffic7,038 (2019)
Projected traffic8,803 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Malaga Alcoa HWY over Squilchuck Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Malaga Alcoa HWY over Squilchuck 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 2023.

How much traffic does Malaga Alcoa HWY over Squilchuck Creek carry?

About 7,038 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Malaga Alcoa HWY over Squilchuck Creek?

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

Who owns Malaga Alcoa HWY over Squilchuck Creek?

It is owned by the County Highway Agency.