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Nearby Bridges in NBI 2021: 1


US 71 & IA 9 over EAST OKOBOJI LAKE (Route: 71)
Num:23680x
Open: no restriction [A]
Built: 1939, Reconstructed: 1979
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Tee beam [04]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Low slump Concrete [4]
Bridge Dimensions
Length: 19.5 m = 64.0 ft
Main Spans: 1 at 11.9 m = 39.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 16.5 m = 54.1 ft (4 Lanes) and Out-To-Out: 23.8 m = 78.1 ft for a 14.9 m = 48.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [07185]: Dickinson County [059], Iowa [19]
Owned by State Highway Agency [01], DOT District: 3
1.7 mi. N of S jct. IA 9
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: M 13.5 / H 15 [2]
Operating: 45.5 metric ton = 50.1 tons (Allowable Stress(AS) [2])
Inventory: 26.8 metric ton = 29.5 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: February 2021 [0221] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 8500 (2019) and Trucks: 6%
Future ADT: 8500 (In 2041 )

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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