Colorado Department of Transportation
Opinion: Colorado can’t withstand more growth without modernizing our aging bridges and water infrastructure
Polar Express rings in the holiday season, but wide-ranging themes power Colorado tourist trains year round
From weddings to murder mysteries, day trips to overnight excursions, rail with a special touch helps rev rural Colorado’s engine
Colorado skiers will soon be able to take a bus from Denver to A-Basin, Loveland and Steamboat
Gov. Jared Polis said during a ceremony at Denver’s Union Station that the “Snowstang” service, which begins Dec. 14, will be “really convenient” and “super easy"
The fire-suppression system in the I-70 tunnels is a critical Colorado insurance policy. We toured it to find out why.
The Colorado Sun spoke to the experts who run the tunnels to learn more about their fire suppression system and how they work. Here’s what we found.
Trump’s “energy dominance” push changing plans for 3 million acres of Colorado land, local stewards say
State and local agencies -- and more recently, Gov. Jared Polis -- prioritized conservation during years of public input and discussion. Now those objectives are in jeopardy.
Preserving Frank Lloyd Wright’s light touch on Vail Pass
Design of humble concrete barriers holding the mountain back from I-70 was influenced by Wright acolytes and set standards for making highways harmonious with nature
Opinion: Why the zero emission vehicle standard matters — and what it means for Colorado
Opinion: Electric vehicles are the future for Colorado
The Air Quality Control Commission has the opportunity to ensure Coloradans have access to the best-performing, cheapest to operate and cleanest cars on the market.
Auto dealers say electric car mandate — a cornerstone of Colorado’s clean air quest — is a threat to tradition
Lowering emissions is a top priority in Colorado, but a look at how dealerships make money — parts, upgrades and financing — shows why dealers aren't happy about the plan to get more zero emission vehicles on the road
Colorado is spending record sums on transportation. But state highways are getting less.
A partisan split on whether to use state funds to help local governments’ transportation needs foreshadows even more difficult choices down the road
Automakers and state agree on ZEV alternative to get electric vehicles to Colorado faster
Zero emission vehicle mandate still being considered, but this unusual consensus means most automakers now support adoption of controversial standard
Who will pay to rebuild damaged U.S. 36 is unclear, but taxpayers may be stuck with some costs
The contract with the road's toll operator, Plenary Roads Denver, says the state may be responsible for any lost revenue
While Colorado hits brakes on building a hyperloop, private sector engineers are continuing the chase
High-tech travel is taking a back seat in the new CDOT boss’ plans for making commutes more efficient
Work on another I-70 mountain toll lane starts Monday and will span into 2021. Here’s what you need to know.
The lane will run 12 miles in the westbound lanes of the interstate from the Veterans Memorial Tunnels in Idaho Springs to Empire Junction. The eastbound toll lane is already open.
Colorado said a quirky artesian mountain spring has to be capped. Residents are trying one last Hail Mary to save it.
People in Teller County and beyond have used the spring at Gillette Flats, near Cripple Creek, as a free water source for generations
A voluntary effort to speed up the availability of electric vehicles in Colorado has come unplugged
Automakers hoped they could convince Colorado not to adopt controversial zero-emission vehicle standards by volunteering to make more electric-vehicle models available in the state
Colorado’s avalanche season claimed 8 lives. Experts say there’s much to learn from how they died.
The conditions during the historic 2018-2019 snow season left behind damage so mysterious that it's still being sorted through
I-25 traffic jams are shifting northern Colorado transit plans into high gear. But are commuters ready to ditch their cars?
Northern Colorado region is growing so fast that it’s almost another Denver, and we know how everyone loves I-25 in Denver.