Historic Bridges
of the United States
Sevenmile Bridge
Mineral County
,
Colorado
Overview
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Map
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TopoZone
Terraserver USA
Facts
Overview
Deck truss bridge over the Rio Grande at the entrance to Marshall Park Campground, just off CO 149
Location
Mineral County
,
Colorado
Status
Open to traffic
History
Built 1935; relocated 1981
Design
Riveted, 11-panel Pratt deck truss
Dimensions
Length of largest span: 109.9 ft.
Total length: 206.0 ft.
Deck width: 23.9 ft.
Recognition
Posted to the National Register of Historic Places on July 11, 1985
Approximate latitude, longitude
+37.79191, -106.98092
(decimal degrees)
37°47'31" N, 106°58'51" W
(degrees°minutes'seconds")
Inventory numbers
NRHP 85001552
(National Register of Historic Places reference number)
BH 11960
(Bridgehunter.com ID)
Inspection
(as of 07/2004)
Deck condition rating:
Satisfactory
(6 out of 9)
Superstructure condition rating:
Satisfactory
(6 out of 9)
Substructure condition rating:
Satisfactory
(6 out of 9)
Appraisal:
Not deficient
Sufficiency rating: 68.1
(out of 100)
Average daily traffic
(as of 2002)
59
Categories
Built 1935
(1,160)
Built during 1930s
(5,105)
Colorado
(271)
Deck truss
(532)
Mineral County, Colorado
(3)
NR-listed
(1,472)
Open
(21,541)
Pratt truss
(1,381)
Relocated
(121)
Rio Grande
(10)
Riveted
(356)
Span length 100-125 feet
(2,247)
Total length 175-250 feet
(1,761)
Truss
(15,706)
Comments
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