50-State Coverage › Colorado

Colorado traffic control documentation requirements

What Colorado DOT asks a contractor to record about temporary traffic control, where that requirement comes from, and how strong the evidence behind it is.

Citation
Section 630.10/630.11 (TCS requirements)
Spec year
2025
Evidence tier
B — binding language identified, pending page-level verification

What Colorado requires

From the specification

Section 630.11 binds Contractor to designate certified Traffic Control Supervisor. CDOT TCS Endorsement + ATSSA TCS Certification required (CDOT or approved vendors, 2-day training + exam + in-field hours).

Source: CDOT 2025 Construction Specifications
How solid is this? Binding language has been identified for Colorado, with page-level verification of the source document still outstanding. Treat the citation as a strong lead rather than a settled quotation, and check it against your contract documents.

How DTCD satisfies it

Daily Entries + PDF Diary Generation produce the daily diary CDOT Construction Manual implements. Section 630.11 TCS designation and certification tracked via Certification Management. Personnel Tracking documents TCS presence on-site.

What DTCD adds beyond the requirement

Note: "Daily diary submitted within 24 hours" language from older CDOT documentation has not been verified in current Section 630 — DTCD can satisfy whichever interpretation CDOT specifies.

On federal-aid work, 23 CFR 630 Subparts J and K apply whatever Colorado specifies, with a compliance date of December 31, 2026 — the federal floor, explained. And after an incident the questions come from the incident, not the specification: 105 published judicial matters on that.

DTCD produces this record from the drive-through itself, and names the controlling Colorado requirement on the generated PDF. Open a sample before deciding anything.

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Filing a work-zone request in Colorado?

Draw the closure on a map and the builder reads the route, mileposts and county from Colorado’s own public GIS, checks bridge clearance on the route and the detour, and exports a WZDx feature, a PDF or an email. It runs in the browser — nothing is submitted or stored.

Open the Colorado builder → · open the offline build · all 50 states

What changes at the Colorado state line

Crews rarely work one state, and the record a neighbouring DOT expects is often named differently and cited somewhere else entirely. Here is how the states bordering Colorado compare:

StateCitationEvidence we have
ArizonaNot yet verifiedAgency source, high confidence
KansasNot yet verifiedAgency source, high confidence
NebraskaNot yet verifiedAgency source, high confidence
New MexicoNot yet verifiedAgency source, medium confidence
OklahomaSection 880 family (Construction Zone Traffic Control)Binding language identified
UtahSection 01554 (Traffic Control) — 1.5 Submittals and 1.9 Traffic Control SupervisorContract-binding spec language
WyomingSection 703.4.2 (Documentation)Contract-binding spec language

All 50 states → · The full 50-state analysis, with every citation →