Status: Still intact, but boarded up after the roads were realigned to make this tunnel unnecessary
Location: 39.748508,-105.399299
Carries CO 119 over a rock formation
Design: tunnel
Design Details: Tunnel
Total Length: 191.9 Feet
Span Length: 0.0 Feet
Overview: Abandoned tunnel on CO 119 near the junction with US 6
History: Built 1939
Built: 1939
Location: Gilpin County
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101559
Overview
Photo taken by James Baughn
101560
North portal
Photo taken by James Baughn
101561
Close-up of top of portal
Photo taken by James Baughn
Status: Open to traffic
Location: 39.798056,-105.489167
Carries Bobtail Road over Bobtail Creek
Design: arch/through/steel
Design Details: Steel through arch
Total Length: 124.3 Feet
Span Length: 107.6 Feet
Overview: Steel through arch bridge over Bobtail Creek on Bobtail Road in Black Hawk
History: Built 1999
Built: 1999
Location: Gilpin County
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127129
Overview
Photo taken by James Baughn
Status: Open to traffic
Location: 39.931904,-105.414300
Carries Union Pacific Railroad over
Design: tunnel
Design Details: Tunnel
Total Length: 124.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel on Union Pacific Railroad
History: Built 1903
Built: 1903
Location: Gilpin County
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315878
T27, Gilpin Co, CO
While the photo & signage identifies this as Tunnel 27, the original Tunnel 27 was daylighted in 1951.
Photo by Xnatedawgx
Status: Open to traffic
Location: 39.931262,-105.404288
Carries Union Pacific Railroad over
Design: tunnel
Design Details: Tunnel
Total Length: 295.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel on Union Pacific Railroad
History: Built 1903
Built: 1903
Location: Gilpin County
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Status: Open to traffic
Location: 39.930073,-105.420921
Carries Union Pacific Railroad over
Design: tunnel
Design Details: Tunnel
Total Length: 78.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel on Union Pacific Railroad
History: Built 1903
Built: 1903
Location: Gilpin County
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315876
T29, Gilpin Co, CO
Tunnel 29 on Union Pacific tracks in South Boulder Creek canyon in Gilpin County, Colorado.
Photo by Xnatedawgx
Status: Open to traffic
Location: 39.910456,-105.477306
Carries Union Pacific Railroad over
Design: tunnel
Design Details: Tunnel
Total Length: 257.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel on Union Pacific Railroad
History: Built 1903
Built: 1903
Location: Gilpin County
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315882
Tunnel 30
Last tunnel on the Moffat subdivision before the big one: 32797-foot Moffat tunnel.
Photo by Kevin Standlee
Status: Collapsed
Location: 39.922285,-105.597378
Carries Denver & Salt Lake Railway over
Design: tunnel
Design Details: Tunnel
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Tunnel on Denver & Salt Lake Railway
History: Built 1903, abandoned 1935, collapsed at later date
Built: 1903
Location: Gilpin County
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Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S - Dismantled and/or in storage. L - Severe loss of historic integrity due to alteration.
