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Nearby Bridges in NBI 2021: 1


TWNS 171 over HERON LAKE OUTLET (Route: 171)
Num:L5227x
Posted for load [P]
Built: 1959, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Wood or timber [7] Slab [01]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Gravel [8]
Bridge Dimensions
Length: 27.1 m = 88.9 ft
Main Spans: 4 at 6.7 m = 22.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.8 m = 22.3 ft (2 Lanes) and Out-To-Out: 7.3 m = 24.0 ft for a 7.9 m = 25.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Weimer [69016]: Jackson County [063], Minnesota [27]
Owned by Town or Township Highway Agency [03], DOT District: 7
0.8 MI S OF JCT TH 60
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Poor [4]
Loading
Design:
Operating: 11.1 metric ton = 12.2 tons (Allowable Stress(AS) [2])
Inventory: 3.3 metric ton = 3.6 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Better than present minimum criteria [7]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: October 2020 [1020] and Frequency: 12
Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 10 (1988) and Trucks: 0%
Future ADT: 10 (In 2029 )

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.

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