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Nearby Bridges in NBI 2021: 2


1ST ST SW over SHELL ROCK RIVER (Route: 0)
Num:8700x
Posted for load [P]
Built: 0, Reconstructed: N/A [0000]
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Concrete continuous [2] Arch - Deck [11]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 44.8 m = 147.0 ft
Main Spans: 2 at 21 m = 68.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.9 m = 25.9 ft (2 Lanes) and Out-To-Out: 11.3 m = 37.1 ft for a 5.5 m = 18.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [05527]: Floyd County [067], Iowa [19]
Owned by City or Municipal Highway Agency [04], DOT District: 0
96180707
Condition
Deck: Serious [3]
Superstructure: Serious [3]
Substructure: Serious [3]
Loading
Design:
Operating: 40.8 metric ton = 44.9 tons (Allowable Stress(AS) [2])
Inventory: 32.7 metric ton = 36.0 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
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: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: March 2020 [0320] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 1.8 km = 1.1 mi
Traffic
ADT: 620 (2005) and Trucks: 0%
Future ADT: 620 (In 2040 )
CONGRESS ST over SHELL ROCK RIVER (Route: 0)
Num:24901x
Open: no restriction [A]
Built: 2008, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 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: 93.9 m = 308.1 ft
Main Spans: 3 at 32.3 m = 106.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 10.4 m = 34.1 ft (2 Lanes) and Out-To-Out: 12.2 m = 40.0 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 [05527]: Floyd County [067], Iowa [19]
Owned by City or Municipal Highway Agency [04], DOT District: 0
96180707
Condition
Deck: Satisfactory [6]
Superstructure: Very Good [8]
Substructure: Very Good [8]
Loading
Design: MS 18 / HS 20 [5]
Operating: 64.6 metric ton = 71.1 tons (Load Factor(LF) [1])
Inventory: 38.5 metric ton = 42.4 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present desirable criteria [8]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Better than present minimum criteria [7]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: March 2020 [0320] and Frequency: 24
Future Work
Work Needed: Other structural work: including hydraulic replacements. [38]
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 3610 (2013) and Trucks: 0%
Future ADT: 3610 (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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