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Nearby Bridges in NBI 2021: 2


DUROW RD over BLUE CREEK (Route: 0)
Num:223450x
Posted for load [P]
Built: 1951, Reconstructed: 1989
Historic: Historical significance is not determinable at this time. [4]

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: Wood or Timber [8] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 48.8 m = 160.1 ft
Main Spans: 1 at 48.8 m = 160.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 5.8 m = 19.0 ft (2 Lanes) and Out-To-Out: 5.9 m = 19.4 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 3.96 m = 13.0 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Linn County [113], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
86083105
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: HL93 [A]
Operating: 20.7 metric ton = 22.8 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 15.9 metric ton = 17.5 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
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: Equal to present desirable criteria [8]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 2020 [0620] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.8 km = 0.5 mi
Traffic
ADT: 150 (2017) and Trucks: 0%
Future ADT: 150 (In 2040 )
BLUE CREEK RD over TRIBUTE WEST BLUE CREEK (Route: 0)
Num:365265x
Open: no restriction [A]
Built: 2007, 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): Wood or timber [7] 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: 6.7 m = 22.0 ft
Main Spans: 1 at 6.4 m = 21.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 7.3 m = 24.0 ft for a 9.8 m = 32.2 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Linn County [113], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
86083110
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 55.1 metric ton = 60.6 tons (Allowable Stress(AS) [2])
Inventory: 39.3 metric ton = 43.2 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 desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 2020 [0620] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 40 (2017) and Trucks: 0%
Future ADT: 40 (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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