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Works Better Corporation, a nonpartisan public benefit corporation, builds this site.

Independent public-records project, separate from the State of Colorado and from every party and campaign.

Every number carries one of four labels (FACT, CALC, SAMPLE or PENDING) and a source you can open.
← I-70 West Vail Pass Auxiliary Lanes

I-70 West Vail Pass Auxiliary Lanes · Budget to actual

How much of the budget can a public record show was paid?

A budget names this project. A payment record names a contract, a fund or a vendor. This page links the two, one record at a time, and grades each link by how sure it is. Money no public record ties to the project stays unlinked. We never guess it.

Budget basis FACT
$325,000,000
Construction cost, as CDOT's construction page states it (August 2021 to December 2026)
Linked payments CALC
$207,103,126
63.7% of the basis
Unlinked CALC
$117,896,874
Not tied to this project by any public record yet. This is not the same as unspent.
  • Exact $93,598,472 28.8% of the basis
  • Documented $113,504,654 34.9% of the basis

Budgeted and allocated

Every public figure for what this project was given or is expected to cost. The basis is the one the linked payments are measured against. Other lines are shown and not added.

Budget figures for I-70 West Vail Pass Auxiliary Lanes, with label and source
What it isAmountLabelSource
Construction cost, as CDOT's construction page states it (August 2021 to December 2026) The basisConstruction cost, as the publisher states it $325,000,000 FACT CDOT, I-70 West Vail Pass Auxiliary Lanes construction page (opens in a new tab). As of September 24, 2026.
The first-phase project CDOT's main page describes, started with a federal INFRA grantCost of one phase $164,200,000 FACT CDOT, I-70 West Vail Pass Auxiliary Lanes project page (opens in a new tab). As of March 24, 2026.
Federal INFRA grant toward the first phaseA grant awarded toward the project $60,700,000 FACT CDOT, I-70 West Vail Pass Auxiliary Lanes project page (opens in a new tab). As of March 24, 2026.
Total estimated cost in CDOT's 10-Year Plan for Vail Pass Safety Improvements, Phase 1Estimated total cost of the whole project $458,100,000 FACT CDOT, 10-Year Strategic Project Pipeline, project tables, all regions (adopted May 21, 2026) (opens in a new tab), page 11. As of May 21, 2026.
Transportation Commission approved budget for project 24567, Construction Package 4, after the April 2026 supplementMoney an agency allocated or programmed $167,179,177 FACT CDOT, Transportation Commission meeting packet, April 2026 (opens in a new tab), page 140. As of March 25, 2026.
STIP line SIN7021.999, programmed for FY 2027Money an agency allocated or programmed $1,000,000 FACT CDOT, FY 2027-2030 Statewide Transportation Improvement Program (STIP) reports (opens in a new tab), page 8. As of June 18, 2026.

Also published, not added

Other public figures for the same money. Each is shown so you can check it, and none is added, so nothing is counted twice.

What cannot be bridged, and why

  • Design, right of way and CDOT's own staff costs. Pay estimates cover construction contracts only. No public CDOT record states what else has been spent on the project.
  • Which phase figure the payments belong to. CDOT labels all five contracts Phase 1. Their payments already pass the $164.2 million first-phase figure on CDOT's main page, CDOT's 10-Year Plan gives Phase 1 a $458.1 million total, and its construction page gives $325 million. No CDOT document says how the three relate.
  • Which budget line each payment came from. Only contract 24567 has a budget record that prints its number. The other four contracts, and the STIP line, cannot be joined to a budget account without the key in the first records-request line.

How this works

Link grades

  • Exact The publisher prints the same key on both records, such as a contract code.
  • Documented A public document states in words that this money belongs to this project.
  • Inferred Our own match, by name, place or date. It is our arithmetic, and the method is shown.
  • Pending No public record links this money to the project yet. It moves no dollars.

Formulas

  • Linked payments = the sum of every Exact, Documented and Inferred link. A Pending link adds nothing.
  • Unlinked = the basis − linked payments.
  • Share = linked payments ÷ the basis.
  • A link never moves more than the payment record it comes from states, and the linked total never passes the basis. Our checks fail the page if either happens.

What this does not show

  • Unlinked money is not unspent money. It is money no public record ties to this project yet.
  • A contractor is named as the contractor of record.