Southbound Chain-Up Station

Temporary Chain-Up Station Located Near Larkspur 

Truckers traveling along southbound I-25, south of Castle Rock, will find a temporary chain-up station near Larkspur - about halfway between Castle Rock and Monument.

The 1,000-foot area is protected by concrete safety barrier and provides room for up to eight semi-trucks to chain up before continuing south along I-25 over Monument Hill. Long-term or overnight parking is not permitted. 

The temporary chain-up station will be operational while the chain law is in effect for travel over Monument Hill. 

For more details on this temporary chain-up station, read this FAQ.

Map showing location of temporary chain-up station near Larkspur on southbound I-25.

Interstate Closures

Depending on the severity of the weather, CDOT may have to proactively close I-25 for the safety of motorists. If I-25 closes, you can also expect Colorado Highways 83 and 105 to close. Closing I-25 in the construction zone area prevents motorists from being stuck in treacherous weather conditions with no nearby services. Visit for travel information