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Nearby Bridges in NBI 2021: 1


FM over MIDDLE RIVER (Route: 0)
Num:56611x
Open: no restriction [A]
Built: 0, Reconstructed: 1993
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Wood or Timber [7]
Bridge Dimensions
Length: 39.6 m = 129.9 ft
Main Spans: 1 at 38.4 m = 126.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.4 m = 21.0 ft (2 Lanes) and Out-To-Out: 6.7 m = 22.0 ft for a 7 m = 23.0 ft approaching roadway.
Vertical Clearance: 4.24 m = 13.9 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Adair County [001], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
76302609
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design:
Operating: 30.2 metric ton = 33.2 tons (Allowable Stress(AS) [2])
Inventory: 21 metric ton = 23.1 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: May 2020 [0520] and Frequency: 24
Future Work
Work Needed: Other structural work: including hydraulic replacements. [38]
Bridge Detour: 0.5 km = 0.3 mi
Traffic
ADT: 20 (2016) and Trucks: 0%
Future ADT: 20 (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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