HistoricBridges.org Menu: HistoricBridges.org Menu:



BridgeSeek

Nearby Bridges in NBI 2021: 1


POTLATCH ROAD over AGATHA CREEK TRESTLE (Route: 0)
Num:30994x
Posted for load [P]
Built: 1912, Reconstructed: 1991
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Wood or timber [7] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Wood or Timber [7]
Bridge Dimensions
Length: 34.1 m = 111.9 ft
Main Spans: 8 at 4.3 m = 14.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 3.9 m = 12.8 ft (1 Lanes) and Out-To-Out: 4.3 m = 14.1 ft for a 4.9 m = 16.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Shoshone County [079], Idaho [16]
Owned by County Highway Agency [02], DOT District: 1
5.7 E. CALDER
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Poor [4]
Loading
Design: MS 18 / HS 20 [5]
Operating: 53.5 metric ton = 58.9 tons (Allowable Stress(AS) [2])
Inventory: 39.9 metric ton = 43.9 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Better than present minimum criteria [7] and "Bridge with ""unknown"" foundation that has not been evaluated for scour. [U]"
Inspections
Date: August 2020 [0820] and Frequency: 12
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 1.6 km = 1.0 mi
Traffic
ADT: 100 (2019) and Trucks: 5%
Future ADT: 150 (In 2039 )

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.

Divider

Back

Top

Divider

About - Contact

Divider