From a gateway to the nation''s capital to the "Crossroads of America," CH2M HILL combines technical excellence with environmental sensitivity and community consciousness to deliver high-value transportation solutions.

A cultural and historic landmark that typifies the grandeur of the nation''s capital, the Lincoln Memorial Circle in Washington, DC, is a major attraction for visitors from around the world. CH2M HILL was selected by the Eastern Federal Lands Highway Division to prepare preliminary and final plans for the rehabilitation of this unique traffic circle and its approaches.

The project contains 6,800 linear feet of roadways, involving reconstruction of the eastern third of the circle from an asphalt roadway to a colored concrete pedestrian plaza, construction of aesthetic bus pads, drainage rehabilitation, replacement of granite curbing and sidewalks, traffic signal work, and repair of the roadway approach on the east side of the Arlington Memorial Bridge.

Historic, cultural, and aesthetic concerns are of extreme importance. All design features are being developed in accordance with the National Park Service Streetscape Manual and the Cultural Landscape Report. Historic preservation of the integrity of original roadways includes constructing granite curbs along all new roads.

To address present-day concerns, the proj-ect is also being modified to include security features to protect the Memorial and the public.

On a larger scale, but reflecting historic ties of its own, is CH2M HILL''s $145-million I-70/I-75 Interchange reconstruction project near Dayton, Ohio. One of the Ohio Department of Transportation''s largest projects, it will transform a substandard interchange designed for 1960s traffic volumes into a safe, modern and efficient interchange.

Phase 1 of the three-phase final design includes a new compressed diamond interchange 1.5 miles south of the I-70/I-75 Interchange, known as the "Crossroads of America." Phases 2 and 3 deal with the main interchange and include new exterior directional ramps, a new two-lane flyover ramp bridge, two interior directional ramps, one loop ramp, and highway widening.