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Nearby Bridges in NBI 2021: 1


COUNTY RD 145 over MEDICINE CR (Route: 145)
Num:17182x
Bridge closed to all traffic [K]
Built: 1904, Reconstructed: 1994
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Steel [3] 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: 14.6 m = 47.9 ft
Main Spans: 1 at 14.3 m = 46.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.2 m = 13.8 ft (1 Lanes) and Out-To-Out: 4.2 m = 13.8 ft for a 5.5 m = 18.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Ravanna [60662]: Mercer County [129], Missouri [29]
Owned by County Highway Agency [02], DOT District: 1
S 30 T 65 N R 22 W
Condition
Deck: Poor [4]
Superstructure: Satisfactory [6]
Substructure: Critical [2]
Loading
Design:
Operating: 0 metric ton = 0.0 tons ()
Inventory: 0 metric ton = 0.0 tons ()
Appraisal
Structural:
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge is scour critical; field review indicates that extensive scour has occurred at bridge foundations. [2]
Inspections
Date: February 2020 [0220] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 0.8 km = 0.5 mi
Traffic
ADT: 30 (2020) and Trucks: 10%
Future ADT: 34 (In 2040 )

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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