Building antenna 1257581 — Ann Arbor, MI
ConstructedFCC Antenna Structure Registration 1257581 — building with antenna near Ann Arbor, Michigan. Building with an antenna mounted on top.
At a glance
FCC Antenna Structure Registration 1257581 is a 67 m (219 ft) building antenna near Ann Arbor, Washtenaw County, Michigan. Its registration status is constructed, with construction recorded on Oct 17, 2007. It is registered to ST JOSEPH MERCY HOSPITAL.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1257581 |
| Unique system identifier | 2656747 |
| Status | Constructed (C) |
| Structure type | Building with antenna (BANT) |
| Date constructed | Oct 17, 2007 |
| Registration issued | Mar 15, 2007 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 2007-agl-1541-oe |
| FAA circular | 70/7460-1K |
| Painting / lighting spec | 3, 4, 5, 12 |
| Marking / lighting code | FAA Style A (9) |
The painting/lighting specification is copied as filed: the FAA marking and lighting chapters and paragraphs cited in the ASR record. The marking/lighting code is decoded using the FCC registration form's code list.
Registered owner
ST JOSEPH MERCY HOSPITAL
Ann Arbor, MI · FRN 0008479867
Location
- Address
- 5301 East Huron River drive
- City
- Ann Arbor
- State
- Michigan
- ZIP
- 48197
- County
- Washtenaw County
- County FIPS
- 26161
- Coordinates
- 42.26586, -83.65481
Within ~40 km
Nearby structures
Guyed tower · Constructed
Guyed tower · Constructed
- Monroe, MI · 1064758153 m
Tower (type not specified) · Constructed
Lattice tower · Constructed
Lattice tower · Constructed
- Novi, MI · 1208809133 m
Tower (type not specified) · Granted (not yet constructed)
How tall is structure 1257581 compared with others?
At 67 m, structure 1257581 is about 14% above the 58 m average across the 169 structures registered in Washtenaw County. It is about 10% below the Michigan average of 74 m across 6,220 registrations. Among the 1,597 registrations nationwide filed under the same structure-type code (BANT), the average overall height is 36 m, so this one is about 83% above that figure.
The supporting structure itself measures 61 m; antennas and other appurtenances on top bring the overall height above ground to 67 m. The site's filed ground elevation is 251 m, which puts the top of the structure 318 m above mean sea level.
Where is structure 1257581, and what is registered around it?
The registration places the structure near Ann Arbor in Washtenaw County, Michigan, at coordinates 42.26586, -83.65481, with the site address filed as "5301 East Huron River drive". Washtenaw County has 169 FCC-registered antenna structures, the 6th-largest count among the 83 Michigan counties with registrations, and 133 of them are marked constructed. Michigan as a whole has 6,220 registrations, the 8th-largest total among the 50 states and DC.
The tallest other registered structure within about 40 km is Southfield, MI · 1007996, a guyed tower at 321 m (constructed).
What does the status "Constructed" mean?
Constructed means the owner has notified the FCC that construction is complete, so the registry treats the structure as standing. The FCC issued registration 1257581 on Mar 15, 2007. Nationally, 141,895 of the 197,770 registrations (71.7%) carry the constructed status, including 4,538 in Michigan.
Who owns antenna structure 1257581?
The FCC record lists ST JOSEPH MERCY HOSPITAL of Ann Arbor, MI as the registered owner, under FCC Registration Number 0008479867.
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 2007-agl-1541-oe and FAA Advisory Circular 70/7460-1K, the FAA review of the structure's effect on air navigation. Its marking and lighting code, 9, is listed on the FCC registration form as "FAA Style A". The painting and lighting specification on file cites FAA chapters 3, 4, 5, 12.
Frequently asked questions
How tall is antenna structure 1257581?
Its registered overall height above ground is 67 m (219 ft), and 318 m (1,043 ft) above mean sea level.
Who owns tower 1257581?
The registered owner is ST JOSEPH MERCY HOSPITAL.
Where is antenna structure 1257581?
It is located near Ann Arbor, Washtenaw County, Michigan at 5301 East Huron River drive (42.26586, -83.65481). Its status is constructed; it was constructed on Oct 17, 2007.
What type of structure is 1257581?
It is filed with the FCC under structure-type code BANT, which decodes to "Building with antenna". Building with an antenna mounted on top. 1,597 registrations nationwide use the same code.
How many antenna structures are registered in Washtenaw County, MI?
Washtenaw County has 169 FCC-registered antenna structures, 133 of them constructed — the 6th-largest count among 83 counties in Michigan.
Related pages
Working with towers? Pro adds alerts, change history and CSV export ($39/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
Dataset updated . Source: FCC Antenna Structure Registration 1257581, weekly bulk file.
About this data
Source: FCC Antenna Structure Registration (ASR) database, as published October 13, 2026 — TowerCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: TowerCensus, “Antenna structure 1257581, Ann Arbor, Washtenaw County, Michigan”, https://towercensus.com/towers/michigan/ann-arbor-1257581 (data as of October 13, 2026).