Site
https://www.codot.gov
I-70 Twin Tunnels Weekly Traffic Advisory
https://www.codot.gov/news/2013-news-releases/04-2013/i70ttweeklyadvisory42513.html
April 25, 2013 - Central Eastern Colorado/CDOT Region 1 - IDAHO SPRINGS – Traffic continues to move smoothly on the two-lane, eastbound Interstate 70 frontage road around the Twin Tunnels. Please remember to anticipate slower traffic and a 35 mph speed limit while the detour remains in place through late 2013.No publisherProject: I-70 West Denver to Glenwood SpringsProject: I-70 Twin TunnelsNewsDenver/Central Colorado (Region 1)2013/04/25 00:00:00 GMT-6News ItemI-70 Twin Tunnels Weekly Traffic Advisory
https://www.codot.gov/news/2012-news-releases/09-2012/i-70-twin-tunnels-weekly-traffic-advisory
September 6, 2012 - TRAFFIC ADVISORY - Central Eastern Colorado/CDOT Region 1 - CLEAR CREEK COUNTY – A lane and ramp closure will be taking place on Interstate 70 in the Twin Tunnels (east Idaho Springs) area next week for geological testing.No publisherTravel AdvisoryDenver/Central Colorado (Region 1)Project: I-70 West Denver to Glenwood SpringsNewsProject: I-70 Twin Tunnels2012/09/06 00:00:00 GMT-6News ItemTT-FONSI Complete Document
https://www.codot.gov/projects/studies/i70twintunnels-environmental-assessment/finding-of-no-significant-impact-fonsi/TT-FONSI_Complete_Document.pdf
No publisherProject: I-70 Twin Tunnels2012/11/07 09:47:00 GMT-6FileFinding of No Significant Impact (FONSI)
https://www.codot.gov/projects/studies/i70twintunnels-environmental-assessment/finding-of-no-significant-impact-fonsi
No publisherProject: I-70 Twin Tunnels2012/11/07 09:48:00 GMT-6FolderAppendix G Tech Memos
https://www.codot.gov/projects/studies/i70twintunnels-environmental-assessment/appendix-g-tech-memos
No publisherProject: I-70 Twin Tunnels2012/07/03 12:41:00 GMT-6FolderI-70 Twin Tunnels Environmental Assessment
https://www.codot.gov/projects/studies/i70twintunnels-environmental-assessment
The Federal Highway Administration (FHWA) and the Colorado Department of Transportation (CDOT) have prepared this Environmental Assessment (EA) documenting analysis under the National Environmental Policy Act for the Twin Tunnels project. The purpose of the project is to improve eastbound highway safety and mobility in the Twin Tunnels area of Interstate 70 (I-70) in Idaho Springs and Clear Creek County, Colorado. FONSI included.No publisherLibraryProject: I-70 Twin Tunnels2012/07/03 12:45:00 GMT-6Folder