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Nearby Bridges in NBI 2021: 2


LOCAL over DOWD CREEK (Route: 0)
Num:244200x
Posted for load [P]
Built: 1916, Reconstructed: 1950
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: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 17.4 m = 57.1 ft
Main Spans: 1 at 16.8 m = 55.1 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 5.2 m = 17.1 ft (2 Lanes) and Out-To-Out: 5.5 m = 18.0 ft for a 7.6 m = 24.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Marshall County [127], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
85190103
Condition
Deck: Poor [4]
Superstructure: Poor [4]
Substructure: Serious [3]
Loading
Design:
Operating: 18.6 metric ton = 20.5 tons ()
Inventory: 10.8 metric ton = 11.9 tons ()
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: N/A [N]
Road Alignment: Better than present minimum criteria [7]
Waterway: Somewhat better than minimum adequacy to tolerate being left in place as is [5] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: November 2020 [1120] 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: 0.5 km = 0.3 mi
Traffic
ADT: 15 (2013) and Trucks: 0%
Future ADT: 15 (In 2040 )
LOCAL over DOWD CREEK (Route: 0)
Num:244210x
Posted for load [P]
Built: 1916, Reconstructed: 1950
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 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: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 16.2 m = 53.2 ft
Main Spans: 1 at 15.2 m = 49.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 5.2 m = 17.1 ft (2 Lanes) and Out-To-Out: 5.5 m = 18.0 ft for a 8.8 m = 28.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Marshall County [127], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
85190104
Condition
Deck: Poor [4]
Superstructure: Poor [4]
Substructure: Poor [4]
Loading
Design:
Operating: 18 metric ton = 19.8 tons (Allowable Stress(AS) [2])
Inventory: 10 metric ton = 11.0 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Basically intolerable requiring high priority of replacement [2]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Waterway: Somewhat better than minimum adequacy to tolerate being left in place as is [5] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: November 1999 [1199] 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: 0.5 km = 0.3 mi
Traffic
ADT: 90 (2013) and Trucks: 0%
Future ADT: 90 (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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