C-DOT: What are you doing?
Alternatives, always alternatives. As traffic congestion becomes more of an issue on Interstate 70, the Colorado Department of Transportation is exploring ways to improve transit along the I-70 corridor. The “preferred” alternatives are those that best meet the projected need – the ability to meet a minimum of the 2025 travel demand projections – and that are affordable, costing less than $4 billion.The nine preferred alternatives all include a third bore at the Eisenhower Tunnel:
* Dual Mode Bus in Guideway. Exclusive guideway for dual electric and diesel powered bus system in the I-70 median eastbound from Silverthorne to the Eisenhower Tunnel and a bi-directional guideway from the Tunnel to C-470. Cost: $3.5 billion.* Diesel Bus in Guideway. Same as dual mode bus in exclusive guideway, only powered by diesel fuel. Cost: $3.3 billion.
* Six-lane highway through Dowd Canyon in Eagle County and between the Eisenhower Tunnel and Floyd Hill, with minimum travel speed of 55 mph. Cost: $2.4 billion.* Same as above with the introduction of tunnels to accommodate minimum speeds of 65 mph. Includes new tunnels at Dowd Canyon in Eagle County, from the Twin Tunnels to Hidden Valley and eastbound at Floyd Hill.* Adding two reversible lanes in the center of highway between the Eisenhower Tunnel and Floyd Hill. This alternative also includes six lanes through Dowd Canyon. Cost: $2.5 billion.
* Six-lane highway and preserve for future rail transit in median. Cost: $2.8 billion.* Six-lane highway and preserve for an advanced guideway system (AGS). Cost: $2.6 billion.* Six-lane highway and preserve for dual-bus mode guideway in median. Cost: $2.6 billion.* Six-lane highway and preserve space for diesel bus guideway in the median. Cost: $2.6 billion.Included within these nine alternatives are roadway improvements, such as passing lanes at select locations and interchange modifications and safety upgrades.
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