Tower 1057821 — Waukesha, WI
ConstructedFCC Antenna Structure Registration 1057821 — tower (type not specified) near Waukesha, Wisconsin. Filed under the FCC's older general tower code, which does not record whether the tower is guyed, lattice or a monopole.
At a glance
FCC Antenna Structure Registration 1057821 is a 42 m (138 ft) tower near Waukesha, Waukesha County, Wisconsin. Its registration status is constructed, with construction recorded on Dec 17, 1999. It is registered to WISCONSIN, STATE OF, which holds 80 FCC structure registrations.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1057821 |
| Unique system identifier | 618210 |
| Status | Constructed (C) |
| Structure type | Tower (type not specified) (TOWER) |
| Date constructed | Dec 17, 1999 |
| Registration issued | Apr 29, 2025 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 00-AGL-1140-OE |
| FAA circular | — |
| Painting / lighting spec | NONE |
| Marking / lighting code | None (1) |
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
Madison, WI · FRN 0002689628
Holds 80 FCC structure registrations — view the full portfolio →
Location
- Address
- 21115 HWY 18
- City
- Waukesha
- State
- Wisconsin
- ZIP
- 53186
- County
- Waukesha County
- County FIPS
- 55133
- Coordinates
- 43.03250, -88.17417
Within ~40 km
Nearby structures
Guyed tower · Constructed
Guyed tower · Constructed
Tower (type not specified) · Constructed
Tower (type not specified) · Constructed
Tower (type not specified) · Constructed
Tower (type not specified) · Dismantled
How tall is structure 1057821 compared with others?
At 42 m, structure 1057821 is about 20% below the 53 m average across the 162 structures registered in Waukesha County. It is about 42% below the Wisconsin average of 73 m across 5,115 registrations. Among the 75,198 registrations nationwide filed under the same structure-type code (TOWER), the average overall height is 76 m, so this one is about 45% below that figure.
The site's filed ground elevation is 277 m, which puts the top of the structure 319 m above mean sea level.
Where is structure 1057821, and what is registered around it?
The registration places the structure near Waukesha in Waukesha County, Wisconsin, at coordinates 43.03250, -88.17417, with the site address filed as "21115 HWY 18". Waukesha County has 162 FCC-registered antenna structures, the 3rd-largest count among the 72 Wisconsin counties with registrations, and 114 of them are marked constructed. Wisconsin as a whole has 5,115 registrations, the 13th-largest total among the 50 states and DC.
The tallest other registered structure within about 40 km is Milwaukee, WI · 1047092, a guyed tower at 374 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 1057821 on Apr 29, 2025. Nationally, 141,898 of the 197,833 registrations (71.7%) carry the constructed status, including 3,946 in Wisconsin.
Who owns antenna structure 1057821?
The FCC record lists WISCONSIN, STATE OF of Madison, WI as the registered owner, under FCC Registration Number 0002689628. Across the registry it holds 80 structure registrations, the 248th-largest portfolio among the 7,865 owners with two or more, including 78 in Wisconsin. Its most common filed structure-type code is TOWER (53 registrations).
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 00-AGL-1140-OE, the FAA review of the structure's effect on air navigation. Its marking and lighting code, 1, is listed on the FCC registration form as "None".
Frequently asked questions
How tall is antenna structure 1057821?
Its registered overall height above ground is 42 m (138 ft), and 319 m (1,048 ft) above mean sea level.
Who owns tower 1057821?
The registered owner is WISCONSIN, STATE OF, which holds 80 FCC antenna structure registrations.
Where is antenna structure 1057821?
It is located near Waukesha, Waukesha County, Wisconsin at 21115 HWY 18 (43.03250, -88.17417). Its status is constructed; it was constructed on Dec 17, 1999.
What type of structure is 1057821?
It is filed with the FCC under structure-type code TOWER, which decodes to "Tower (type not specified)". Filed under the FCC's older general tower code, which does not record whether the tower is guyed, lattice or a monopole. 75,198 registrations nationwide use the same code.
How many antenna structures are registered in Waukesha County, WI?
Waukesha County has 162 FCC-registered antenna structures, 114 of them constructed — the 3rd-largest count among 72 counties in Wisconsin.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1057821, weekly bulk file.
About this data
Source: FCC Antenna Structure Registration (ASR) database, as published October 20, 2026 — TowerCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: TowerCensus, “Antenna structure 1057821, Waukesha, Waukesha County, Wisconsin”, https://towercensus.com/towers/wisconsin/waukesha-1057821 (data as of October 20, 2026).