Northern Pacific Engineering Drawing: Steel Spans S3 East and S3 West, Bridge 1 - State Boulevard, Helena, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB017743
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Steel Spans S2 East and S2 West, Bridge 1 - State Boulevard, Helena, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB017744
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Steel Spans S1 West and S5 East, Bridge 1 - State Boulevard, Helena, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB017741
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Steel Spans S1 East and S5 West, Bridge 1 - State Boulevard, Helena, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB017742
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Steel Bracing 30 Foot Deck Plate Girder (DPG), Bridge 3 - 10 - Mile Creek, West of Helena, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB017444
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Steel Bents, Bridge 1 - State Boulevard, Helena, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB017745
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Shop Plan - Steel Spans, Bridge 1 - State Boulevard, Helena, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB017747
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Girder Plan Details - Slab, Bridge 3 - 10 - Mile Creek, West of Helena, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB017440
• Item
• undated

Part of Timothy Miller Collection