+42.92472, -91.81433
42°55'29" N, 91°48'52" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IA 150 over SMALL STREAM
Structure number:000000000605875
Location:1.7 MI. S OF JCT. IA #56
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:7.9 ft. [2.4 m]
Total length:24.0 ft. [7.3 m]
Skew angle:45°
Owner:State Highway Agency [01]
Year built:1969
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Number of main spans:2
Main spans material:Concrete continuous [2]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: April 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:3,790 [as of 2015]
Truck traffic:13% of total traffic
Structural appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:83.5

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
April 2016Good7 out of 10379083.5
April 2014Good7 out of 10358079.5
April 2012Good7 out of 10306081.0
April 2010Good7 out of 10302080.8
April 2008Good7 out of 10413074.5
April 2006Good7 out of 10417074.7
January 2005Good7 out of 10458073.5
February 2002Good7 out of 10434074.2
May 2000Good7 out of 10421026.0
May 1998Good7 out of 10417026.0
January 1996Good7 out of 10365026.0
April 1994Good7 out of 10337084.7
May 1992Good7 out of 10314086.5
April 1990Good7 out of 10303086.8

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.1981584000