150TH ST over SKUNK RIVER (Route: 0)
Num:316250x
Posted for load [P]
Built: 1920, Reconstructed: 1974
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: Wood or Timber [8] with Wearing Surface: Gravel [8]

Bridge Dimensions
Length: 46.9 m = 153.9 ft
Main Spans: 1 at 45.7 m = 149.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6 m = 19.7 ft (1 Lanes) and Out-To-Out: 6.1 m = 20.0 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 4.6 m = 15.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Story County [169], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
85233103

Condition
Deck: Satisfactory [6]
Superstructure: Poor [4]
Substructure: Fair [5]
Loading
Design:
Operating: 20 metric ton = 22.0 tons (Load Factor(LF) [1])
Inventory: 11.8 metric ton = 13.0 tons (Load Factor(LF) [1])

Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
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: November 2020 [1120] 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: 0.8 km = 0.5 mi
Traffic
ADT: 100 (2019) and Trucks: 0%
Future ADT: 100 (In 2040 )

150TH ST over I-35 (Route: 0)
Num:49330x
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: 0.4 Miles (0.7 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: 71.6 m = 234.9 ft
Main Spans: 4 at 21 m = 68.9 ft
Approach Spans: 0
Skew: 21
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 9.9 m = 32.5 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]: Story County [169], Iowa [19]
Owned by State Highway Agency [01], DOT District: 1
2.1 MILES SOUTH OF SR E18

Condition
Deck: Good [7]
Superstructure: Very Good [8]
Substructure: Good [7]
Loading
Design: M 18 / H 20 [4]
Operating: 56.1 metric ton = 61.7 tons (Load Factor(LF) [1])
Inventory: 24.6 metric ton = 27.1 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present minimum criteria [6]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: October 1999 [1099] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 1 km = 0.6 mi
Traffic
ADT: 70 (2019) and Trucks: 33%
Future ADT: 70 (In 2039 )