CDOT · Transportation
CO 119 Safety, Mobility & Bikeway
Safety, mobility and bikeway improvements on the Diagonal Highway between Boulder and Longmont, from about Foothills Parkway to Hover Street (Boulder County). Timeline Fall 2024–Spring 2027.
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Timeline Fall 2024–Spring 2027
CDOT’s dashboards print a paid figure for all two of this project’s contracts. Our sum: $66.79M + $7.48M = $74.27M. CDOT prints no total. Who is being paid, contract by contract
Your take on this project
Latest public update
CDOT's project page prints a Program Cost of $165 million for the CO 119 work between Boulder and Longmont, and a timeline of fall 2024 to spring 2027. CDOT's monthly dashboard for August 2026 reports two construction contracts: $74.27M paid to date against $96.91M in current contract value (our sums of the two contracts' printed figures). Those are payments on two contracts, not the project's whole cost, and this site does not add them to the $165 million. A third construction package, whose notice to proceed CDOT dates 3 September 2026, is not in these figures.
Open questions for the state (2)
- CDOT prints a $165 million program cost and two construction contracts worth $96.91M. What else does the program include?
- When will CDOT report payments on the third construction package?
Total cost and spending
Total cost & funding are drawn from the official record(s) listed below.
Pacing
Money paid against contract time used, from CDOT's monthly dashboards for August 2026, the latest in the record. CALC
- Construction package 1 Paid 87.1% of the contract with 88.6% of its time used: 1.5 percentage points behind an even pace, $1.12M less.
- Construction package 2 Paid 36.9% of the contract with 78.9% of its time used: 41.9 percentage points behind an even pace, $8.49M less.
An even pace is our baseline, not CDOT's plan. A gap is a question to ask, not a verdict, and it compares money with time, not with the work done.
See pacing month by monthMilestones (3)
- Construction began — September 2024
- Construction under way, delivered as construction manager/general contractor — 2024–2027
- Project timeline ends — Spring 2027
Who is being paid (2)
| Vendor | Contract / value | Paid to date | Confidence |
|---|---|---|---|
| WITHHELDCM/GC contract, construction package 1 (project 25959) | $76.66M contract | $66.79M paid · Aug 2026 | A |
| WITHHELDCM/GC contract, construction package 2 (project 25960) | $20.25M contract | $7.48M paid · Aug 2026 | A |
Sources and receipts (2)
- ACDOT — CO 119 Safety, Mobility & Bikeway project page: cost, timeline and contractor (codot.gov)read 25 September 2026
- ACDOT — CO 119 monthly project dashboard (August 2026)read 26 September 2026