Tower detail

Chicago 311.2 ASR-1008798

227 W MONROE. 311.2 owned by L00005111 with 1 listed carrier presences.

311 ft Height

311.2

L00005111 Owner

Structure registrant or inferred host

1 Carrier count

Distinct carrier presences on this site

ASR matched Data quality

Registered structure plus carrier overlay

Structure facts

What the site currently knows about this tower, pulled from the public source stack behind the route graph.

Registration ASR-1008798
Location Chicago, IL 60604
Lighting Unknown
Status Constructed
Coordinates 41.88028, -87.63472
Notes Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 104 meters away.

Carrier presence

The carrier and technology hints that make this more useful than a raw tower-owner listing.

AT&T

Approx. 0.9 miles
LTE

Derived from 2 OpenCelliD cell observations across 29 crowd samples.

Nearby pages

Other tower detail pages within a short drive of this site.

Chicago, IL

ASR matched

Chicago 38.7 ASR-1019866

38.7 with 2 carrier presences. Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 62 meters away.

1 S FRANKLIN ST

39 ft 38.7 Registered owner 0.1 miles
AT&T T-Mobile
5G NR LTE

Chicago, IL

ASR matched

Chicago 524.9 ASR-1032960

524.9 with 1 carrier presences. Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 147 meters away.

233 SOUTH WACKER DRIVE

438 ft 524.9 Jeremy 0.1 miles
T-Mobile
5G NR

Chicago, IL

ASR matched

Chicago 527.3 ASR-1032959

527.3 with 2 carrier presences. Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 114 meters away.

233 SOUTH WACKER DRIVE

438 ft 527.3 Jeremy 0.1 miles
AT&T T-Mobile
5G NR LTE

Chicago, IL

ASR matched

Chicago 33.5 ASR-1040091

33.5 with 2 carrier presences. Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 192 meters away.

172 WEST MADISON

31 ft 33.5 GLENN 0.1 miles
AT&T T-Mobile
5G NR LTE

Why this detail page matters

The product logic behind showing a standalone tower page instead of burying the record in a generic list.

  • Exact ASR structures and crowdsourced-only nodes are both listed, with the difference labeled rather than hidden.
  • Tower owner is often a neutral host like Crown Castle or American Tower, not the wireless carrier itself.
  • Coverage ranges here are rough carrier-level estimates derived from reported cell radii. Treat them as indicative, not exact.