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Nearby Bridges in NBI 2021: 1


FM over IOWA RIVER (Route: 0)
Num:316700x
Posted for load [P]
Built: 1941, 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): Steel [3] Truss - Thru [10]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 153.3 m = 503.0 ft
Main Spans: 1 at 42.7 m = 140.1 ft
Approach Spans: 6
Skew: 0
Width, Roadway: 6.6 m = 21.7 ft (2 Lanes) and Out-To-Out: 7.1 m = 23.3 ft for a 9.4 m = 30.8 ft approaching roadway.
Vertical Clearance: 4.37 m = 14.3 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Tama County [171], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
82140406
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 25.1 metric ton = 27.6 tons (Allowable Stress(AS) [2])
Inventory: 12.8 metric ton = 14.1 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
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: September 2020 [0920] 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: 1.4 km = 0.9 mi
Traffic
ADT: 45 (2017) and Trucks: 0%
Future ADT: 45 (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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