While catching up on the local-local-local scene, I checked back on CT Siting Council docket #388, and found the "Certification Package" under "Final Decision"--

http://www.ct.gov/csc/lib/csc/pendingproceeds/docket_388/388-20100811-ce...

It's the whole collection of pertinent documents for this proceeding. If you're short on time, you might skip to the Opinion section starting on page 25, especially paragraph 3:

Given the significant amount of electrical transmission structure in the area, AT&T also evaluated transmission facilities owned by the Connecticut Light & Power Company (CL&P) and United Illuminating (UI) to see if co-location on such facilities in lieu of a new tower would be feasible.... After exhausting co-location and alternative site options, AT&T pursued the proposed site on 1990 Litchfield Turnpike in Woodbridge.

Also interesting is (full) paragraph 3 on page 26:

...However, the Council is also concerned about the visual presence the proposed 170-foot tower would have on Litchfield Turnpike, the nearby hiking trails ... the Darling House and the New England Cement Company Kiln and Quarry site.... Thus, the Council will order that the proposed tower be built to a height of 170 feet, ... and that antennas be flush-mounted. While a flush-mounted configuration may result in a slightly compromised coverage footprint, the Council believes this is outweighed by the visual improvement associated with a narrow antenna-mount profile.

Also worth checking out are the maps of possible coverage on pages 20-23, figures 4-7.