LOCAL over MIDDLE RIVER (Route: 0)
Num:55460x
Posted for load [P]
Built: 1920, Reconstructed: 1993
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Wood or timber [7] Stringer/Multi-beam or girder [02]
Deck: Wood or Timber [8] with Wearing Surface: Gravel [8]

Bridge Dimensions
Length: 45.7 m = 149.9 ft
Main Spans: 1 at 37.2 m = 122.1 ft
Approach Spans: 1
Skew: 0
Width, Roadway: 4.9 m = 16.1 ft (2 Lanes) and Out-To-Out: 5.2 m = 17.1 ft for a 6.7 m = 22.0 ft approaching roadway.
Vertical Clearance: 3.18 m = 10.4 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Adair County [001], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
74332603

Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design:
Operating: 23.6 metric ton = 26.0 tons (Allowable Stress(AS) [2])
Inventory: 16.4 metric ton = 18.0 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 replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: May 2020 [0520] 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: 0.6 km = 0.4 mi
Traffic
ADT: 30 (2012) and Trucks: 0%
Future ADT: 30 (In 2040 )

LOCAL over MIDDLE NODAWAY RIVER (Route: 0)
Num:55450x
Posted for load [P]
Built: 1950, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.5 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Wood or Timber [8] with Wearing Surface: Gravel [8]

Bridge Dimensions
Length: 64.3 m = 211.0 ft
Main Spans: 1 at 38.1 m = 125.0 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 5.7 m = 18.7 ft (2 Lanes) and Out-To-Out: 6.3 m = 20.7 ft for a 7.6 m = 24.9 ft approaching roadway.
Vertical Clearance: 4.42 m = 14.5 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Adair County [001], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
74332402

Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 23.6 metric ton = 26.0 tons (Allowable Stress(AS) [2])
Inventory: 16.3 metric ton = 17.9 tons (Allowable Stress(AS) [2])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
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: May 2020 [0520] 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: 0.5 km = 0.3 mi
Traffic
ADT: 80 (2012) and Trucks: 0%
Future ADT: 80 (In 2040 )