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Nearby Bridges in NBI 2021: 1


IA 146 over NORTH SKUNK RIVER (Route: 146)
Num:45970x
Open: no restriction [A]
Built: 1958, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0.1 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: 98.8 m = 324.2 ft
Main Spans: 3 at 38.1 m = 125.0 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 8.6 m = 28.2 ft (2 Lanes) and Out-To-Out: 10.3 m = 33.8 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Poweshiek County [157], Iowa [19]
Owned by State Highway Agency [01], DOT District: 1
2.7 MILES N OF JCT US 63
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: M 18 / H 20 [4]
Operating: 43.9 metric ton = 48.3 tons (Load Factor(LF) [1])
Inventory: 26.3 metric ton = 28.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.9 km = 1.2 mi
Traffic
ADT: 1470 (2019) and Trucks: 12%
Future ADT: 1470 (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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