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I-90/SR 18 Interchange Project

Sector: Road • Location: Washington, United States

Source: National Today

Project
Under Construction

A construction project to improve the congested I-90/SR 18 interchange in Washington state aimed at easing chronic congestion and backups. The project includes a diverging diamond interchange and broader SR 18 widening efforts, with the final phase involving paving and striping work.

Status
Under Construction
Sector
Road
Location
Washington, United States of America
Updated
22 Jul 2026
Source
National Today

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Project Information

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The project “I-90/SR 18 Interchange Project” is an infrastructure initiative in the Road sector, located in Washington, United States. Taiyo aggregates data on it from National Today.

Participants

Not available for this record.

Status

Original status

under construction

Taiyo status

Under Construction

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

A construction project to improve the congested I-90/SR 18 interchange in Washington state aimed at easing chronic congestion and backups. The project includes a diverging diamond interchange and broader SR 18 widening efforts, with the final phase involving paving and striping work.

Original sector

Transportation

Location

Country

United States of America (USA)

State

Washington

Source

Source

National Today

URL

More Details

Record type

Project

Sector

Road

Article published date

2026-04-02

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