US 6 & IA 38 over OTTER CREEK


+42.01389, -91.06667
42°00'50" N, 91°04'00" 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 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:3,290 [as of 2014]
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]
Operating rating:59.3 tons [53.9 metric tons]
Inventory rating:35.5 tons [32.3 metric tons]
Sufficiency rating:78.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
June 201578.0FairSatisfactorySatisfactorySatisfactory-3290
June 201363.7FairFairFairSatisfactory-3940
June 201163.8FairFairFairSatisfactory-3890
June 200964.6FairFairFairSatisfactory-3420
June 200764.6FairFairFairSatisfactory-3470
June 200576.8FairSatisfactorySatisfactoryGood-4080
October 200377.0FairSatisfactoryGoodGood-3930
September 200177.7FairSatisfactoryGoodGood-3450
July 199976.1FairSatisfactoryGoodGood-3360
June 199776.6FairSatisfactoryGoodGood-2990
December 199576.6FairSatisfactoryGoodGood-2900
November 199376.9GoodGoodGoodGood-2740
December 199183.7FairGoodGoodSatisfactory-2570

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Reinforced Concrete Abutmentlinear ft.137137000
Steel Pileeach1818000
Reinforced Concrete Pier Caplinear ft.6761600
Pourable Jointlinear ft.60402000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.204204000
Concrete Protective Coatingsq. ft.510510000
Reinforced Concrete Slabsq. ft.3,6723,39727500
Wearing Surfacessq. ft.3,0603,060000