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Nearby Bridges in NBI 2021: 1


US 71 over E TO W OKOBOJI LAKES CON (Route: 71)
Num:23671x
Open: no restriction [A]
Built: 1999, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

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Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Steel [3] Box beam or girders - Multiple [05]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 20.4 m = 66.9 ft
Main Spans: 1 at 18 m = 59.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 13.2 m = 43.3 ft (3 Lanes) and Out-To-Out: 15.9 m = 52.2 ft for a 13.1 m = 43.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Dickinson County [059], Iowa [19]
Owned by State Highway Agency [01], DOT District: 3
3.2 mi. S of S jct. Ia. 9
Condition
Deck: Good [7]
Superstructure: Very Good [8]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 44.1 metric ton = 48.5 tons (Allowable Stress(AS) [2])
Inventory: 32.7 metric ton = 36.0 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] 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:
Bridge Detour: 3.1 km = 1.9 mi
Traffic
ADT: 15000 (2019) and Trucks: 3%
Future ADT: 15000 (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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