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Nearby Bridges in NBI 2021: 1


FM over JONATHAN CREEK (Route: 0)
Num:137860x
Posted for load [P]
Built: 1920, Reconstructed: 1970
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): Other [00]
Deck: Corrugated Steel [6] with Wearing Surface: Gravel [8]
Bridge Dimensions
Length: 32.3 m = 106.0 ft
Main Spans: 1 at 32 m = 105.0 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 6.1 m = 20.0 ft (2 Lanes) and Out-To-Out: 6.1 m = 20.0 ft for a 7 m = 23.0 ft approaching roadway.
Vertical Clearance: 4.27 m = 14.0 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Decatur County [053], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
69250103
Condition
Deck: Good [7]
Superstructure: Poor [4]
Substructure: Poor [4]
Loading
Design:
Operating: 19 metric ton = 20.9 tons (Allowable Stress(AS) [2])
Inventory: 12.9 metric ton = 14.2 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: 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: December 1999 [1299] 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: 0.3 km = 0.2 mi
Traffic
ADT: 30 (2016) and Trucks: 0%
Future ADT: 30 (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.

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