I-25 & CO 402 Construction Zone
About This Project
Background
- Major construction on I-25 in both directions in northern Colorado
- Traffic is operating with two lanes in each direction, minimum shoulders, and concrete barrier on both sides
Challenge
- What: Multi-vehicle crash PDO (Property Damage Only)
- When: Saturday, November 10, 2018, 10:50am
- Where: South-bound I-25 within construction zone
- Problems:
- Closest responder is one exit away
- Queue behind crash delays response and size-up by at least 10 minutes
- Congestion persists for 3 hours
- Negative Impacts:
- Estimated road user delay cost was over $30K
- Over 1300-person hours wasted
Solution
- Stolfus & Associates conducted collaborative traffic study
- Engaged multiple stakeholders including:
- Emergency first-responders
- Municipal leaders
Outcome
- What: Multi-vehicle with tow required
- When: Wednesday, January 2, 2019, 3:50pm
- Where: North-bound I-25 within construction zone
- Positive Impacts:
- 11 minutes to clear scene from traffic
- Use of mutual aid channel
- Responder access to crash scene via pavement not open to the public within active construction area
- Total traffic disruption approx. 1 hour