The CR&NW had a 400ft tunnel located at approximately milepost 123.8, roughly 0.9 miles north of the Haley Creek Trestle. This tunnel is now part of the O’Brien Creek road between the O’Brien and Haley Creek crossings.

Location: N 61.42482 W 144.46328
Acme Mapper

Sources

1: “Report of Archeological and Historical Investigations along the Copper River, Tasnuna River to Chitina to the Deptartment of Highways” Reger, Douglas; Cole, Terrence; Brown, Michael. Prepared for Alaska Division of Parks, Office of Statewide Cultural Programs, July 1975

2: “Draft Supplement to the Copper River High Final Environmental Impact Statement” Nov 3, 1976