Tremaine Bridge

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Photo taken by Jason Smith

Overview: Through truss bridge over Boone River on 280th Street
Location: Hamilton County, Iowa
Status: Open to one lane traffic with a weight limit
History: Built 1902; rehabilitated 1940
Builder: - N.M. Stark & Co. of Des Moines, Iowa
Design: Pin-connected camelback through truss
Dimensions: Length of largest span: 160.1 ft.
Total length: 186.0 ft.
Deck width: 14.4 ft.
Vertical clearance above deck: 14.6 ft.
Recognition: Posted to the National Register of Historic Places on May 15, 1998
Also called: Bever Bridge
Bone's Mill Bridge
Approximate latitude, longitude: +42.38647, -93.80926 (decimal degrees)
42°23'11" N, 93°48'33" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/433386/4693004 (zone/easting/northing)
Quadrangle map:: Webster City
Land survey: T. 88 N., R. 25 W., Sec. 31
Inventory numbers: IA 171920 (Iowa bridge number)
NRHP 98000519 (National Register of Historic Places reference number)
BH 13563 (Bridgehunter.com ID)
Inspection (as of 08/2015): Deck condition rating: Fair (5 out of 9)
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Serious (3 out of 9)
Sufficiency rating: 22.6 (out of 100)
Average daily traffic (as of 2015): 60