Moffat Tunnel is an important part of Colorado’s history, as well as a bright part of our future. We are showing the country a new model for pursuing passenger rail through collaboration. | Governor Jared Polis

The Rio Grande pops out of the Moffat tunnel on its "Main Line through the Rockies". From the Pentrex DVD "Denver & Rio Grande Western". $14.95 this week. http://rfd.video/DandRGW | Railfan Depot

🚀Let’s go! ✅ These two images illustrate crucial stages in tunnel construction and design, from both structural and detailed engineering perspectives. The first provides a cut section view showing how waterproofing, primary lining, and secondary lining are layered to resist both soil and water pressures. Proper sealing, joint design and drainage beneath the invert are taken into account to protect long-term durability and maintain serviceability. The second image is a technical drawing that com

EAGLE 8 LIVE: We're flying over an underground tunnel that formed at a construction zone in Winter Haven, closing a nearby road. https://www.wfla.com/news/polk-county/winter-haven-road-closed-after-tunnel-forms-between-retention-ponds/ | WFLA News Channel 8

Forepoling, or spilling, is a tunnel construction method used to provide temporary support in weak or unstable ground conditions. It involves inserting closely spaced steel pipes, bars, or other support elements into the ground ahead of the tunnel face at an angle, forming a protective canopy, often followed by grouting. As excavation progresses beneath the spiles, they stabilise the surrounding soil or rock, preventing collapse. This method allows for controlled excavation in small sections, wi