Registered Washington contractor, based in CLAYTON, MO
ALSTOM SIGNALING OPERATION LLC
First registered in Washington on August 23, 2016
- License number
- ALSTOSO843D4
- UBI
- 602152876
- Trade
- General contractor(all general contractor contractors in Washington)
- L&I license type and specialty
- CONSTRUCTION CONTRACTOR · GENERAL
- Business address
- CLAYTON, MO
- Phone
- (816) 650-4628
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Current verification
- Found: No Attorney General complaint records found
- Review: Registration is not currently active
- Review: Registration appears to be expired
From the state records below; each section shows its source and when it was last synced.
Registration
- Status
- EXPIRED
- Effective date
- August 23, 2016
- Expiration date
- September 1, 2022
- Suspension date
- April 1, 2021
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Bond
L&I does not publish bond records for contractors with EXPIRED status.
Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced November 9, 2026.
Liability insurance
L&I does not publish liability insurance records for contractors with EXPIRED status.
Source: L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries. Last synced November 9, 2026.
People
Principals L&I lists for this license.
- HORNING, SCOTT ASince August 23, 2016
- MCKAY, DAVID LSince August 23, 2016
Source: L&I Contractor License - Principal Data, Washington State Department of Labor & Industries. Last synced November 9, 2026.
Attorney General complaints
No Attorney General complaint records found.
Matched on business name and city: ALSTOM SIGNALING OPERATION in CLAYTON. Complaints filed under another name or city are not included.
A complaint record does not establish that the business violated the law.
Source: Attorney General Consumer Complaints, Washington State Attorney General's Office. Last synced November 9, 2026.
Record history
Changes to this contractor's state records since we began tracking them. The state's current-status tools do not show these.
No changes recorded since our records began on October 6, 2026.
Sources
- L&I Contractor License Data - General, Washington State Department of Labor & Industries
- L&I Contractor License Data - Bond, Washington State Department of Labor & Industries
- L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries
- L&I Contractor License - Principal Data, Washington State Department of Labor & Industries
- Attorney General Consumer Complaints, Washington State Attorney General's Office
Record last synced October 7, 2026.
Check this record against the state directly on L&I's Verify a Contractor page (search by license number ALSTOSO843D4).