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Nearby Bridges in NBI 2021: 2


LOCAL over SOUTH FORK (Route: 0)
Num:176860x
Posted for load [P]
Built: 1919, Reconstructed: N/A [0000]
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Gravel [8]
Bridge Dimensions
Length: 14.3 m = 46.9 ft
Main Spans: 1 at 13.7 m = 44.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 5.2 m = 17.1 ft (2 Lanes) and Out-To-Out: 5.3 m = 17.4 ft for a 7.3 m = 24.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Hardin County [083], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
89223203
Condition
Deck: Serious [3]
Superstructure: Poor [4]
Substructure: Poor [4]
Loading
Design:
Operating: 26.2 metric ton = 28.8 tons (Allowable Stress(AS) [2])
Inventory: 17 metric ton = 18.7 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: February 2020 [0220] and Frequency: 12
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 40 (2013) and Trucks: 0%
Future ADT: 40 (In 2040 )
LOCAL over CREEK (Route: 0)
Num:176871x
Open: no restriction [A]
Built: 1987, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Tee beam [04]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Gravel [8]
Bridge Dimensions
Length: 14.6 m = 47.9 ft
Main Spans: 1 at 14 m = 45.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 8.6 m = 28.2 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Hardin County [083], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
89223204
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Fair [5]
Loading
Design: M 18 / H 20 [4]
Operating: 78.9 metric ton = 86.8 tons (Load Factor(LF) [1])
Inventory: 42.9 metric ton = 47.2 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Better than present minimum criteria [7]
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: March 1999 [399] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.5 km = 0.3 mi
Traffic
ADT: 30 (2013) and Trucks: 0%
Future ADT: 30 (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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