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Nearby Bridges in NBI 2021: 2


IA 28 over DRAINAGE DITCH (Route: 28)
Num:51041x
Open: no restriction [A]
Built: 1927, Reconstructed: 1983
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Slab [01]
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: 10.4 m = 34.1 ft
Main Spans: 1 at 9.8 m = 32.2 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 12.2 m = 40.0 ft (2 Lanes) and Out-To-Out: 13.2 m = 43.3 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 [04805]: Warren County [181], Iowa [19]
Owned by State Highway Agency [01], DOT District: 5
0.5 MILE N OF JCT. IA 92
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 78.5 metric ton = 86.4 tons (Load Factor(LF) [1])
Inventory: 47 metric ton = 51.7 tons (Load Factor(LF) [1])
Appraisal
Structural: Better than present minimum criteria [7]
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 assessed or calculated scour condition. [5]
Inspections
Date: March 2021 [0321] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.8 km = 0.5 mi
Traffic
ADT: 2490 (2019) and Trucks: 8%
Future ADT: 2490 (In 2041 )
IA 92 over MIDDLE RIVER (Route: 92)
Num:51111x
Open: no restriction [A]
Built: 1982, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.5 Miles (0.8 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: 79.6 m = 261.2 ft
Main Spans: 3 at 29.3 m = 96.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 12.2 m = 40.0 ft (2 Lanes) and Out-To-Out: 13.2 m = 43.3 ft for a 14.6 m = 47.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Warren County [181], Iowa [19]
Owned by State Highway Agency [01], DOT District: 5
0.3 MILES E OF Iowa 28
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 66.5 metric ton = 73.2 tons (Allowable Stress(AS) [2])
Inventory: 29.9 metric ton = 32.9 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: July 1999 [799] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 4210 (2019) and Trucks: 8%
Future ADT: 4210 (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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