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Nearby Bridges in NBI 2021: 1


US 34 over WEST NISHNABOTNA RIVER (Route: 34)
Num:35931x
Open: no restriction [A]
Built: 1990, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

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Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
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: 130.5 m = 428.2 ft
Main Spans: 5 at 29.6 m = 97.1 ft
Approach Spans: 0
Skew: 45
Width, Roadway: 13.4 m = 44.0 ft (2 Lanes) and Out-To-Out: 14.3 m = 46.9 ft for a 13.4 m = 44.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Mills County [129], Iowa [19]
Owned by State Highway Agency [01], DOT District: 4
0.6 MI. W OF W JCT SR M16
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 82.9 metric ton = 91.2 tons (Load Factor(LF) [1])
Inventory: 49.6 metric ton = 54.6 tons (Load Factor(LF) [1])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Better than present minimum criteria [7]
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: April 1999 [499] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 4310 (2019) and Trucks: 17%
Future ADT: 4310 (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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