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Nearby Bridges in NBI 2021: 2


FM over IOWA RIVER OVERFLOW (Route: 0)
Num:316580x
Open: no restriction [A]
Built: 1967, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 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: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 69.2 m = 227.0 ft
Main Spans: 3 at 26.8 m = 87.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 9.1 m = 29.9 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]: Tama County [171], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
82131704
Condition
Deck: Serious [3]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: M 18 / H 20 [4]
Operating: 39.4 metric ton = 43.3 tons (Allowable Stress(AS) [2])
Inventory: 27.3 metric ton = 30.0 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 2020 [0920] 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: 3.5 km = 2.2 mi
Traffic
ADT: 770 (2017) and Trucks: 21%
Future ADT: 770 (In 2040 )
FM over IOWA RIVER (Route: 0)
Num:316610x
Open: no restriction [A]
Built: 1968, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Girder and floorbeam system [03]
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: 153.9 m = 504.9 ft
Main Spans: 5 at 33.5 m = 109.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 9.1 m = 29.9 ft for a 12.8 m = 42.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Tama County [171], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
82132002
Condition
Deck: Poor [4]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: M 18 / H 20 [4]
Operating: 47.4 metric ton = 52.1 tons (Allowable Stress(AS) [2])
Inventory: 31.6 metric ton = 34.8 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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: September 2020 [0920] 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: 3.5 km = 2.2 mi
Traffic
ADT: 770 (2017) and Trucks: 21%
Future ADT: 770 (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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