MO 21 S over BIG RVR


+37.81149, -90.77387
37°48'41" N, 90°46'26" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:MO 21 S over BIG RVR
Structure number:3658
Old structure number:A4475 1 (from 1992 edition)
Location:S 25 T 36 N R 2 E
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:65.6 ft. [20.0 m]
Total length:261.2 ft. [79.6 m]
Roadway width between curbs:38.7 ft. [11.8 m]
Deck width edge-to-edge:41.3 ft. [12.6 m]
Skew angle:10°
Owner:State Highway Agency [01]
Year built:1988
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:4
Main spans material:Prestressed concrete continuous [6]
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: September 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:5,146 [as of 2018]
Truck traffic:9% 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:87.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018GoodGoodGoodGood514687.7
September 2016GoodGoodGoodGood383090.4
September 2014GoodGoodGoodGood358690.8
September 2012GoodGoodGoodGood373490.5
October 2010GoodGoodGoodGood404689.9
October 2008GoodGoodGoodGood410489.8
October 2006GoodGoodGoodGood420889.6
December 2004GoodGoodGoodGood392690.2
October 2002GoodGoodGoodGood380090.4
January 2002GoodGoodGoodGood344291.1
November 2000GoodGoodGoodGood364890.7
November 1999GoodGoodGoodGood353890.9
December 1998GoodGoodGoodGood353890.9
October 1997GoodGoodGoodGood353888.9
December 1996GoodGoodGoodGood294790.1
October 1995GoodVery GoodVery GoodExcellent294791.2
November 1994GoodVery GoodVery GoodExcellent283491.4
December 1993GoodVery GoodVery GoodExcellent274191.6
September 1992GoodVery GoodVery GoodExcellent274191.6
October 1991GoodExcellentExcellentExcellent232992.4