Ask anyone in Hilltop or Crestmoor what's happening with the bus lanes on Colorado Boulevard and you'll get some version of the same answer: they went to a meeting, they saw a map covered in sticky notes, and then nothing happened. That's not a resident being vague. That's an accurate summary of where the state's Bus Rapid Transit project actually stands as of this month, and it's worth understanding why, because the corridor that borders the neighborhood on its western edge is heading toward a decision that will shape traffic, sidewalks, and business turnover here for years.
The Colorado Department of Transportation told residents this spring it hoped to name a Locally Preferred Alternative, the specific design CDOT commits to building, by summer 2026. Summer has come and gone. Nothing has been announced. That gap between the promised timeline and the actual one is the real story right now, more than any single design option, because it tells you something about how contested this corridor has become.
Three Designs, One Number That Doesn't Add Up
CDOT's second public open house, held May 13 at the Clayton Early Learning Center, drew roughly 300 residents to look at three configurations for the 7-mile stretch running from 40th Avenue to Hampden Avenue. Two weeks earlier, CDOT presented the same material closer to home, at Graland Country Day School, in a meeting the Hilltop Neighborhood Association later summarized for members who couldn't attend.
Here's what the three options actually mean for someone who drives, bikes, or catches the Route 40 bus on Colorado Boulevard most days:
| Alternative | Dedicated bus lane? | Estimated cost | What CDOT's own analysis shows |
|---|---|---|---|
| 1. Mixed-Flow | No, buses share existing lanes | $200–250 million | Up to 25% faster transit travel time versus doing nothing; roughly 5% slower for personal vehicles |
| 2. Side-Running | Yes, curbside dedicated lane | $200–250 million | Up to 30% faster transit travel time; personal vehicle travel time could stretch up to 1.4 times longer |
| 3. Center-Running (hybrid) | Yes, center lane on portions of the corridor | Roughly $350 million | CDOT's own materials flag this option for "unacceptable traffic impacts" and higher construction cost and disruption relative to the other two |
CDOT is justifying the whole project on a projection that the population along the corridor will grow 52% by 2050. That's the number driving urgency. But Glendale, the small city whose roughly one-mile stretch of Colorado Boulevard includes some of its largest sales-tax generators, pulled its own traffic counts and found something that cuts against that story: vehicle counts at every measured intersection along the corridor have actually declined over the past 20 years. Glendale's city council voted unanimously to oppose all three alternatives, recommending no build at all, and pointed to that gap between the projected future and the observed past as a central reason why.
That contradiction is worth sitting with. A state agency is proposing a quarter-billion-to-350-million-dollar redesign of the road most Hilltop and Crestmoor residents use to get anywhere, built on a growth forecast that the corridor's own recent traffic data doesn't support. Nobody has fully resolved that tension yet, which is part of why a decision that was supposed to land by summer hasn't.
What Residents Actually Pushed Back On
The concerns raised at the Hilltop meeting weren't abstract. According to the neighborhood association's own recap, four themes dominated the discussion:
- Cut-through traffic on residential side streets, a worry specific to Alternatives 2 and 3, where a dedicated bus lane could push more drivers off Colorado Boulevard and onto quieter blocks
- Whether wider sidewalks and improved crosswalks, which the project promises regardless of which alternative wins, could be built now rather than waiting on the full BRT timeline
- Why smaller fixes like signal timing and sidewalk gaps couldn't move ahead independently of the larger project
- Whether RTD can actually deliver the frequent, reliable service the project promises, given its track record on existing routes
CDOT's answer on sequencing was that these projects are managed more efficiently as one coordinated package rather than piecemeal. Whether that satisfies residents who'd rather see safer sidewalks sooner is a separate question, and it's one the agency hasn't fully closed.
Denver Streets Partnership, the mobility advocacy group pushing for the strongest version of dedicated bus lanes, argues that anything short of a real dedicated lane isn't worth building. Director Jill Locantore has described the mixed-flow option as "not actual bus rapid transit," on the reasoning that a bus stuck in the same traffic as everyone else defeats the purpose of the investment.
That's one side. On the other, drivers who commute the corridor worry a dedicated lane simply pushes congestion into fewer lanes without meaningfully increasing bus ridership, since Colorado Boulevard already carries around 3,000 riders a day on a route that isn't at capacity.
The Precedent Next Door
Nobody in Hilltop needs a briefing on what BRT construction actually looks like on the ground. East Colfax Avenue, a few miles south, has been under active BRT construction since 2024, with completion expected by mid-2027. That project has become the reference point everyone brings up when discussing Colorado Boulevard, for better or worse. Supporters point to it as proof the concept works. Skeptics point to the disruption corridor businesses have weathered during construction as the exact scenario they don't want repeated on Colorado Boulevard.
CDOT itself has acknowledged the comparison. A spokesperson for the agency noted at the May meeting that lessons from Colfax will shape how Colorado Boulevard construction gets sequenced, and that the center-running design, the most disruptive of the three options to build, was already the one CDOT's own analysis was steering away from.
What Actually Changes Once a Decision Lands
Even once CDOT names its preferred alternative, this isn't a project that reshapes the neighborhood next spring. Design work follows the decision, running into 2027, with construction not expected to begin before 2030. The corridor's near-term character, the daily commute, the walk to Cranmer Park, the drive to Pete's Fruits and Vegetables or Park Burger, stays the same for the next several years no matter which option wins.
What does change, and soon, is the clarity residents get about which future they're planning around. A side-running lane with longer car commutes is a different daily reality than a mixed-flow option with modest bus gains and minimal driver disruption. Right now, both are still on the table, along with a hybrid option CDOT's own numbers suggest it may not favor.
For residents who want a voice in which one wins, the Hilltop Neighborhood Association has kept its community survey open specifically because CDOT's feedback window hasn't closed. That's the most concrete thing to do this fall: not wait for an announcement, but weigh in before one gets made.
The Takeaway for Anyone Watching This Corridor
The headline isn't which alternative CDOT eventually picks. It's that a deadline the agency set for itself came and went without action, on a project justified by a growth number that the corridor's own city-level data doesn't back up. That's not a reason to assume the project stalls indefinitely. Federal transit projects move through review phases that outlast any single summer. But it is a reason to treat "coming this summer" announcements from any agency with a little more patience than urgency, and to keep an eye on whether the actual decision, whenever it lands, matches the reasoning CDOT has offered so far.
If you're weighing what a home along or near this corridor means for your next move, whether you're already in Hilltop watching this play out from your porch, or considering a move to this part of Denver and want the full picture before you tour, that's the kind of neighborhood-level context worth having before you make a decision.
Kelli Barton tracks these details across Hilltop, Crestmoor, and the rest of central Denver because they're part of what living here actually involves. Receive Exclusive Listings in Your Inbox and stay ahead of what's changing in the neighborhoods you care about.
