Fleet typeIdentity
Asset-based
141 power units. Brokers price each fleet type apart.
Carrier profile · USDOT 1748840
INTERWEST CONSTRUCTION INC
141 power unitsavg 12.1 yrLocal · 1 statesBURLINGTON, WA
CARRIER ACTIVEHAZMAT
Observed fleet · trailing 24 mo daily
141Power units
36 observed · MCS-150
20Trailers seen
Decoded · vPIC
12.1Avg age (yr)
1998–2025 · vPIC
Click to see how we scored it
Load decision · FMCSA snapshot · 2026-06-21
Review before loading
Operating, but with flags a broker should weigh before tendering freight.
Established 18 yearsVehicle out-of-service rate above average
Watch · 4
In good standing · 1
Operating authority1818 yr active
since 2008Insurance (BIPD)Unknown
FMCSA L&IVehicle OOS · 24mo25.025.0 %
▲ 22.26% nat'lCrashes · fatal22
3 in 24moVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersOlder
12.1 yr
Model years 1998–2025 · peer benchmark computing.
Identity stabilityStable
18 yr unchanged
Same registration since 2008 — no chameleon / reincarnation signal.
AI readFull read
Is INTERWEST CONSTRUCTION INC safe to work with?
Is INTERWEST CONSTRUCTION INC safe to load? INTERWEST CONSTRUCTION INC (USDOT 1748840) is an active asset-based motor carrier based in BURLINGTON, WA, operating 141 power units and 192 drivers. Operating authority has been active 18 years (past the 24-month broker-confidence threshold). Across 70 roadside inspections, its vehicle out-of-service rate is 25.0% (above the 22.26% national average), with 3 reportable crashes in the last 24 months. FMCSA has not assigned a safety rating. Vektor rates it review before loading (71/100), with the leading concern: fatal crash on record. Source: FMCSA SAFER/MCMIS, last updated 2026-06-21.
FMCSA fields + Vektor analysis · updated 2026-06-21
ICINTERWEST CONSTRUCTION INC 71
01
Safety
70 inspections · 24 mo · vs national benchmarks
Out-of-service rate· trailing 24 months vs national benchmark
Vehicle OOS 25.0% (24-mo)16 veh insp · 24-mo · nat'l 22.26%
050%nat'l 22.26%
Driver OOS 8.5% (24-mo)47 drv insp · 24-mo · nat'l 6.67%
030%nat'l 6.67%
OOS trajectory· trailing 6-mo vehicle-OOS rate vs national
15.4% now▼ Improving
Inspection coverage· expected vs observed · the fraud signal
Inspection coverage
How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.2 / unit·yr
thin signalabundant signal
Few roadside inspections for a 141-unit fleet — the out-of-service and violation signals above rest on a small sample, so weight them cautiously. Thin coverage on a young authority is itself a flag.
- Registered power units
- 141
- Inspections · 24 mo
- 47
- Annualized
- ≈24 / yr
- Coverage
- ≈0.2 inspections / unit · yr
Violation themes· decoded · grouped by BASIC
What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.
- 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving23
- 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance7 · 6 OOS
- 383.23 Operating without a valid CDLDriver Fitness4 · 4 OOS
- 393.43 Parts & accessories (vehicle condition)Vehicle Maintenance4 · 4 OOS
- 390.21 USDOT number marking on vehicleUnsafe Driving3
- 393.207 Parts & accessories (vehicle condition)Vehicle Maintenance3 · 3 OOS
- 396.3 Inspection / repair / maintenance not performedVehicle Maintenance3 · 3 OOS
- 396.17 Periodic (annual) inspectionVehicle Maintenance3
- 392.82 Using a hand-held mobile phoneUnsafe Driving3
- 393.70 Coupling devices / fifth wheelVehicle Maintenance3 · 3 OOS
02
Authority & insurance
Can they legally + adequately haul your load?
Insurance continuity· insurer · policy · lapses
No insurance filing history on record.
03
Equipment & fleet
VIN-decoded · NHTSA vPIC
Capacity· power units = haulable capacity; trailers are towed
- Registered power units (MCS-150)
- 141
- Observed power (24 mo)
- 36
- Trailers (towed)
- 20
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
Fleet age· model years · decoded VINs
Average age
2025
Newest model yr
1998
Oldest model yr
VINs decoded
04
Operations & lanes
Revealed by inspection density across 1 states · 24 mo
Operating footprint· revealed by roadside-inspection geography
Operating radiusLocal
revealedStates observed11
US statesInspections · 24 mo4747
WA busiestInspection density by state· each tile = a state · shade = inspections, last 24 mo
Home base
BURLINGTON, WA
Top corridor
WA
Density
fewermore
05
Network & fraud
Affiliated entities & reincarnation signals · for review, not a verdict
No shared-VIN flow in the last 12 months
None of this carrier's trucks were inspected under another USDOT in the last 12 months — any shared equipment is historical, not active.
Show all-time history (2 trucks · 1 carriers)
Across all inspections on record: USDOT 1775227
Shares a registration email domain with other carriers
@interwest.biz — 4 carriers: USDOT 1775227USDOT 1925343USDOT 2207516
Capacity consistency· registered vs roadside-observed power units
Registered (MCS-150)141141
Observed (24 mo)3636
Shared w/ other carriers22
Registered capacity materially exceeds what is observed roadside — the MCS-150 may be stale or the fleet under-utilized.
06
Identity & contact
FMCSA census + L&I dossier
Location
- Physical address
- 609 N HILL BLVD, BURLINGTON, WA, 98233-4600
- Operation
- Intrastate (Hazmat)· Hazmat
Contact
- Phone
- (360) 757-7574
- Fax
- (360) 757-6464
- hr@interwest.biz
- Web domain
- interwest.biz
Registration
- Officers
- Roy Swihart · Eben Twaddle
- USDOT / docket
- 1748840
- First registered
- 03/14/2008
- Last MCS-150
- 04/22/2024 · 2,000,200 mi (2023)
- FMCSA safety rating
- Not rated
- Recordable crash rate
- 0.00
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
07
Federal activity
Daily-captured FMCSA licensing & insurance changes — monitored by Vektor
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.
08
Reviews
Verified broker, shipper & driver reviews — moderated
Performance ratings only — never the Vektor risk score
No verified reviews yet
Be the first broker or shipper to rate INTERWEST CONSTRUCTION INC. Reviews cover performance only — on-time delivery, payment speed, communication — and never affect the Vektor risk score.
Leave a review09
Frequently asked
What is INTERWEST CONSTRUCTION INC's USDOT number?
INTERWEST CONSTRUCTION INC's USDOT number is 1748840.
Is INTERWEST CONSTRUCTION INC authorized to operate?
As of 2026-06-21, INTERWEST CONSTRUCTION INC is active in the FMCSA register.
What is INTERWEST CONSTRUCTION INC's safety record?
INTERWEST CONSTRUCTION INC has a 25.0% vehicle out-of-service rate (national average 22.26%) across 70 roadside inspections, with 3 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 71/100 (tier: review).
How big is INTERWEST CONSTRUCTION INC's fleet?
INTERWEST CONSTRUCTION INC operates 141 power units and 192 drivers per its most recent MCS-150 filing.
Where is INTERWEST CONSTRUCTION INC based?
INTERWEST CONSTRUCTION INC is based in BURLINGTON, WA, with roadside inspections recorded across 1 state.