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Nearby Bridges in NBI 2021: 2


US 30 over WAPSIPINICON RIVER (Route: 30)
Num:20740x
Open: no restriction [A]
Built: 1955, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.3 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Low slump Concrete [4]
Bridge Dimensions
Length: 146.3 m = 480.0 ft
Main Spans: 5 at 32 m = 105.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 10.4 m = 34.1 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]: Clinton County [045], Iowa [19]
Owned by State Highway Agency [01], DOT District: 6
1.5 mi E of Jct SR Y4E
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: M 18 / H 20 [4]
Operating: 48.3 metric ton = 53.1 tons (Load Factor(LF) [1])
Inventory: 28.9 metric ton = 31.8 tons (Load Factor(LF) [1])
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 minimum criteria [6] and Countermeasures have been installed to mitigate an existing problem with scour. [7]
Inspections
Date: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 3170 (2019) and Trucks: 19%
Future ADT: 3170 (In 2040 )
235TH STREET over WAPSIPINICON RIVER (Route: 0)
Num:121690x
Bridge closed to all traffic [K]
Built: 1930, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Steel [3] Girder and floorbeam system [03]
Approach Span(s): Steel [3] 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: 128 m = 420.0 ft
Main Spans: 2 at 25 m = 82.0 ft
Approach Spans: 6
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 8.2 m = 26.9 ft for a 11 m = 36.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Clinton County [045], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
081E11105
Condition
Deck: Serious [3]
Superstructure: Serious [3]
Substructure: Good [7]
Loading
Design: M 13.5 / H 15 [2]
Operating: 0 metric ton = 0.0 tons (Allowable Stress(AS) [2])
Inventory: 0 metric ton = 0.0 tons (Allowable Stress(AS) [2])
Appraisal
Structural:
Deck Geometry: Equal to present minimum criteria [6]
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: January 2017 [0117] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1 km = 0.6 mi
Traffic
ADT: 100 (2018) and Trucks: 0%
Future ADT: 100 (In 2037 )

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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