Carrier profile · USDOT 480592 · Updated Aug 20, 2026

Shannahan Artesian Well Co Inc

24 power unitsavg 8.3 yrLocal · 1 statesSAINT MICHAELS, MD96/100

AUTHORITY STATUS UNKNOWN

Observed fleet · trailing 24 mo daily

24Power units

4 observed · MCS-150

—Trailers seen

None observed · 24 mo

8.3Avg age (yr)

2008–2023 · vPIC

Call dispatch(410) 745-5071 Email dispatchmike@shannahanwell.com

Click to see how we scored it

Load decision · FMCSA snapshot · Aug 20, 2026

Clear to load

Active authority and a clean federal record. No blocking issues found.

Watch · 1

MCS-150 update dueThe biennial MCS-150 update is overdue.

In good standing · 2

Established 34 yearsOperating authority has been on file since 1992.Out-of-service rates below national averageBoth vehicle and driver OOS rates beat the national benchmark across 8 inspections.

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo16.7%

▼ 22.26% nat'l

Crashes · fatal

Clean · 24 mo

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo16.7%

▼ 22.26% nat'l

Crashes · fatal

Clean · 24 mo

Vektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots

Fleet typeIdentity

Asset-based

24 power units. Brokers price each fleet type apart.

Fleet age vs peersTypical

8.3 yr

Model years 2008–2023 · peer benchmark unavailable.

Identity stabilityStable

34 yr unchanged

Same registration since 1992 — no chameleon / reincarnation signal.

Safety

6 inspections · 24 mo · vs national benchmarks

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 16.7%24-mo cumulative

050%nat'l 22.26%

Driver OOS 0.0%24-mo cumulative

030%nat'l 6.67%

Every inspection in the window pooled — 6 vehicle and 6 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

14.3% · latest 6-mo window▼ Falling

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending down 19.0 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

6 inspections in the charted months · busiest month Aug '26 · 2

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

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.

Thin coverage

Under-inspected

Expected

Well-monitored

Heavily inspected

≈0.1 / unit·yr

thin signalabundant signal

Few roadside inspections for a 24-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: 24
Inspections · 24 mo: 6
Annualized: ≈3 / yr
Coverage: ≈0.1 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 Driving2 · 0 OOS
390.19 Unified registration / MCS-150Unsafe Driving1 · 0 OOS
392.16 Failure to use seat beltUnsafe Driving1 · 0 OOS
393.41 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 1 OOS
393.9 Inoperative required lampsVehicle Maintenance1 · 0 OOS
393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance1 · 0 OOS

Explore full safety record — inspections, BASICs, crashes

Authority & Insurance

Can they legally + adequately haul your load?

Insurance continuity· insurer · policy · lapses

No insurance filing history on record.

This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here. Request a certificate of insurance to confirm active coverage before tendering.

Explore full authority & insurance record

Equipment

VIN-decoded · NHTSA vPIC

Capacity· power units = haulable capacity; trailers are towed

Registered power units (MCS-150): 24
Observed power (24 mo): 4
Trailers (towed): 0

Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.

Fleet age· model years · decoded VINs

8.3 yr

Average age

2023

Newest model yr

2008

Oldest model yr

50.0%

VINs decoded

Explore full fleet — VIN roster, equipment mix, age distribution

Operations & Lanes

Revealed by inspection density across 1 states · 24 mo

Operating footprint· revealed by roadside-inspection geography

Operating radiusLocal

revealed

States observed

US states

Inspections · 24 mo

MD busiest

Inspection density by state· each tile = a state · shade = inspections, last 24 mo

Home base

SAINT MICHAELS, MD

25145 ST MICHAELS ROAD

Top corridor

MD 6

Density

fewermore

Shade = roadside inspections, last 24 mo.

See the full operating map — state density, top lanes

Network & Fraud

Affiliated entities & reincarnation signals · for review, not a verdict

Shares a company officer with other carriers

michael hall — 59 carriers: USDOT 196759 USDOT 745562 USDOT 888507 USDOT 897865 USDOT 950607 USDOT 965523 USDOT 998864 USDOT 1201867

Capacity consistency· registered vs roadside-observed power units

Registered (MCS-150)

Observed (24 mo)

Registered capacity materially exceeds what is observed roadside — the MCS-150 may be stale or the fleet under-utilized.

Explore the carrier network & VIN cross-links

Identity & Federal

FMCSA census + L&I dossier

Location

Physical address: 25145 ST MICHAELS ROAD, SAINT MICHAELS, MD, 21663
Mailing address: PO BOX 730, SAINT MICHAELS, MD, 21663
Operation: Intrastate (Non-Hazmat)

Contact

Phone: (410) 745-5071
Fax: (410) 745-2264
Email: mike@shannahanwell.com
Web domain: shannahanwell.com

Registration

Officer: Michael Hall
USDOT / docket: 480592
First registered: Apr 21, 1992
Last MCS-150: Oct 1, 2023 · 105,000 mi (2023)
FMCSA safety rating: Not rated
D-U-N-S: —

Fleet (self-reported · MCS-150)

Power units

Drivers

CDL drivers

105,000

Annual mileage

Open the full identity & federal record

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.

Open the full federal-record activity feed

Reviews

Verified broker, shipper & driver reviews — moderated

Performance ratings only — never the Vektor risk score

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Verification summaryAuthority, insurance, safety and identity facts for SHANNAHAN ARTESIAN WELL CO INC.

SHANNAHAN ARTESIAN WELL CO INC (USDOT 480592) has a Vektor safety score of 96/100 and a Clear to load verdict, from the carrier's FMCSA record refreshed Aug 20, 2026.

The carrier has an unknown current for-hire authority status because no FMCSA L&I authority row is available as of Aug 20, 2026.

It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available as of Aug 20, 2026.

Its vehicle out-of-service rate was 16.7% over the last 24 months, versus the 22.26% CVSA national average, from FMCSA roadside-inspection data refreshed Aug 20, 2026.

The carrier received 6 roadside inspections in the last 24 months — 6 vehicle-level and 6 driver-level — across 1 state, according to FMCSA roadside-inspection data refreshed Aug 20, 2026.

The carrier has 0 reportable crashes in the last 24 months and 0 fatal crashes across the full FMCSA crash record available as of Aug 20, 2026.

It reports 24 power units and 11 drivers in its most recent MCS-150 filing dated Oct 1, 2023.

It has no FMCSA-assigned safety rating in the federal record refreshed Aug 20, 2026.

Frequently asked

What is SHANNAHAN ARTESIAN WELL CO INC's USDOT number?

SHANNAHAN ARTESIAN WELL CO INC's USDOT number is 480592.

Is SHANNAHAN ARTESIAN WELL CO INC authorized to operate?

As of Aug 20, 2026, SHANNAHAN ARTESIAN WELL CO INC is active in the FMCSA register.

What is SHANNAHAN ARTESIAN WELL CO INC's safety record?

SHANNAHAN ARTESIAN WELL CO INC has a 16.7% vehicle out-of-service rate (national average 22.26%) across 8 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 96/100 (tier: clear).

How big is SHANNAHAN ARTESIAN WELL CO INC's fleet?

SHANNAHAN ARTESIAN WELL CO INC operates 24 power units and 11 drivers per its most recent MCS-150 filing.

Where is SHANNAHAN ARTESIAN WELL CO INC based?

SHANNAHAN ARTESIAN WELL CO INC is based in SAINT MICHAELS, MD, with roadside inspections recorded across 1 state.

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