Lakewood WA to Tacoma WA: Built by Northern Pacific RR 1873-74; to Northern Pacific Ry 8-18-1896

Yelm WA to Lakewood WA: Built by Northern Pacific RR 1873-74; to Northern Pacific Ry 8-18-1896

Nisqually WA to Lakewood WA: Built by Tacoma Olympia & Gray's Harbor RR 1890-91; to United Railroads of Washington 2-13-1892; to Northern Pacific Ry 4-21-1898

Tenino Jct to Yelm WA: Built by Northern Pacific RR 1871-73; to Northern Pacific Ry 8-18-1896

Nisqually WA to St Clair: Built by Tacoma Olympia & Gray's Harbor RR 1890-91; to United Railroads of Washington 2-13-1892; to Northern Pacific Ry 4-21-1898

Tenino WA to St Clair: Built by Northern Pacific Ry 1912-14

Tenino WA to Olympia WA: Construction started by Olympia RR Union as 36" gauge 1874; to Olympia & Chehalis Valley RR 1881; to Port Townsend Southern RR 1887; to standard gauge 1890; to Northern Pacific Ry 1898; to Northern Pacific RR ; abandoned 1916

Tenino Jct WA to Longview WA: Built by Northern Pacific RR 1871-73; to Northern Pacific Ry 8-18-1896

Longview WA to Kalama WA: Built by Northern Pacific RR 1871-73; to Northern Pacific Ry 8-18-1896

(Mississippi Rails)