US 6 & IA 38 over OTTER CREEK


+41.60456, -91.03606
41°36'16" N, 91°02'10" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 6 & IA 38 over OTTER CREEK
Structure number:000000000018310
Location:2.2 mi. S of Jct. I-80
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:39.0 ft. [11.9 m]
Total length:102.0 ft. [31.1 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:36.1 ft. [11.0 m]
Owner:State Highway Agency [01]
Year built:1959
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Concrete continuous [2]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Low slump Concrete [4]

Latest Available Inspection: June 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:3,580 [as of 2017]
Truck traffic:17% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Better than present minimum criteria [7]
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]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:77.5

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2017FairSatisfactorySatisfactorySatisfactory358077.5
June 2015FairSatisfactorySatisfactorySatisfactory329078.0
June 2013FairFairFairSatisfactory394063.7
June 2011FairFairFairSatisfactory389063.8
June 2009FairFairFairSatisfactory342064.6
June 2007FairFairFairSatisfactory347064.6
June 2005FairSatisfactorySatisfactoryGood408076.8
October 2003FairSatisfactoryGoodGood393077.0
September 2001FairSatisfactoryGoodGood345077.7
July 1999FairSatisfactoryGoodGood336076.1
June 1997FairSatisfactoryGoodGood299076.6
December 1995FairSatisfactoryGoodGood290076.6
November 1993GoodGoodGoodGood274076.9
December 1991FairGoodGoodSatisfactory257083.7

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Abutmentlinear ft.137134030
Steel Pileeach1818000
Reinforced Concrete Pier Caplinear ft.6765200
Pourable Jointlinear ft.60402000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.204204000
Concrete Protective Coatingsq. ft.510510000
Reinforced Concrete Slabsq. ft.3,6723,377285100
Wearing Surfacessq. ft.3,0603,056220