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IA 21 over SOUTH SKUNK RIVER

Map

Coordinates:
+41.44444, -92.57500
41°26'40" N, 92°34'30" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IA 21 over SOUTH SKUNK RIVER
Structure number:000000000211161
Location:3.7 MI. S OF DELTA
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:97.1 ft. [29.6 m]
Total length:482.0 ft. [146.9 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:43.3 ft. [13.2 m]
Owner:State Highway Agency [01]
Year built:1989
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:5
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: August 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:800 [as of 2015]
Truck traffic:16% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Equal to present desirable criteria [8]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:88.4 tons [80.4 metric tons]
Inventory rating:36.3 tons [33.0 metric tons]
Sufficiency rating:90.7

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201690.7GoodGoodGoodGood-800
August 201491.1GoodGoodGoodVery Good-670
August 201291.1GoodGoodGoodVery Good-660
August 201092.6GoodGoodGoodVery Good-840
August 200892.7GoodVery GoodGoodVery Good-820
September 200692.0GoodVery GoodGoodVery Good-1070
February 200592.1GoodVery GoodExcellentExcellent-1050
November 200291.3GoodVery GoodExcellentExcellent-1320
April 200091.4GoodVery GoodExcellentExcellent-1300
February 199989.5GoodVery GoodExcellentExcellent-1290
February 199690.2GoodVery GoodExcellentExcellent-1030
October 199490.1GoodVery GoodExcellentExcellent-1030
September 199395.6GoodVery GoodExcellentExcellent-920
July 198995.7GoodExcellentExcellentExcellent-890

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.2,8802,879100
Deck
Reinforced Concrete Decksq. ft.20,97920,71326600
Substructure
Reinforced Concrete Pier Walllinear ft.8080000
Reinforced Concrete Abutmentlinear ft.87751200
Concrete Protective Coatingsq. ft.201201000
Reinforced Concrete Pier Caplinear ft.164164000
Joints
Strip Seal Jointlinear ft.8708700
Bearings
Elastomeric Bearingeach2424000
Movable Bearingeach1201200
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.9728908200