Cyr Bridge Project logo detour map for Cyr Bridge Project logo
  • Starting the week of April 2, the Cyr Bridge will be closed to vehicle and pedestrian traffic.
  • The Clark Fork River boat ramp located near the Cyr Bridge will remain open.
  • A detour route is expected to be in place throughout construction.
    • For access to and from the boat ramp and the west side of the river, motorists will need to use the Fish Creek Interchange (Exit 66).
    • For access to and from the east side of the river, westbound I-90 motorists will need to use the Cyr Interchange (Exit 70). Eastbound I-90 motorists will need to use the Alberton Interchange (Exit 75), enter I-90 traveling westbound, and exit at the Cyr Interchange.
  • Boating and floating beneath the bridge will remain open, however signage may direct traffic to one side of the river at certain times. Do not linger beneath the bridge.