306 ST (FAS 6370) over I029


+42.95351, -96.79504
42°57'13" N, 96°47'42" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:306 ST (FAS 6370) over I029
Structure number:000000064006090
Location:9.0 S SD 46 INTERCHANGE
Purpose:Carries highway over highway
Route classification:Major Collector (Rural) [07]
Length of largest span:69.9 ft. [21.3 m]
Total length:252.3 ft. [76.9 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:32.8 ft. [10.0 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Owner:State Highway Agency [01]
Year built:1960
Year reconstructed:1988
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:4
Main spans material:Steel continuous [4]
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: January 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:270 [as of 2015]
Truck traffic:3% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:55.9 tons [50.8 metric tons]
Inventory rating:33.9 tons [30.8 metric tons]
Sufficiency rating:98.3

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
January 201798.3FairSatisfactorySatisfactoryGood-270
January 201599.3FairGoodSatisfactoryGood-270
February 201398.3FairGoodSatisfactoryGood-270
March 201199.3FairGoodSatisfactoryGood-270
February 200998.3FairGoodSatisfactoryGood-270
December 200698.3FairGoodSatisfactoryGood-270
March 200598.3FairGoodSatisfactoryGood-270
May 200398.3FairGoodSatisfactoryGood-270
June 200198.3GoodGoodGoodGood-105
August 199998.3GoodGoodGoodGood-105
September 199798.3GoodVery GoodGoodGood-105
July 199598.2GoodVery GoodGoodGood-105
January 199498.2GoodGoodGoodGood-105
December 199198.2GoodGoodGoodGood-105