IS 270 E over MISSISSIPPI RVR

Map

Coordinates:
+38.76614, -90.17890
38°45'58" N, 90°10'44" W

Source: National Bridge Inventory. Information not verified; use at your own risk.

Name:	IS 270 E over MISSISSIPPI RVR
Structure number:	643
Old structure number:	A 890 4 `(from 1992 edition)`
Location:	S 36 T 47 N R 7 E
Purpose:	Carries highway over waterway
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	242.5 ft. `[73.9 m]`
Total length:	5411.4 ft. `[1649.3 m]`
Roadway width between curbs:	58.1 ft. `[17.7 m]`
Deck width edge-to-edge:	62.7 ft. `[19.1 m]`
Vertical clearance below bridge:	53.8 ft. `[16.4 m]`
Skew angle:	5°
Owner:	State Highway Agency `[01]`
Year built:	1964
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:	29
Main spans material:	Steel continuous `[4]`
Main spans design:	Girder and floorbeam system `[03]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Other `[9]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	57,243 `[as of 2015]`
Truck traffic:	18% of total traffic
Deck condition:	Fair `[5 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Fair `[5 out of 9]`
Structural appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Deck geometry appraisal:	Meets minimum tolerable limits to be left in place as is `[4]`
Water adequacy appraisal:	Equal to present desirable criteria `[8]`
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]`
Pier/abutment protection:	In place and functioning `[2]`
Scour condition:	Bridge foundations determined to be stable for assessed or calculated scour condition. `[5]`
Operating rating:	58.4 tons `[53.1 metric tons]`
Inventory rating:	35.6 tons `[32.4 metric tons]`
Sufficiency rating:	63.0

Date	Suff. Rating	Condition	Deck	Superstructure	Substructure	SD/FO	ADT
June 2015	63.0	Fair	Fair	Fair	Fair	-	57243
June 2014	48.0	Poor	Satisfactory	Poor	Poor	SD	55925
June 2013	48.0	Poor	Satisfactory	Poor	Poor	SD	58003
June 2012	48.0	Poor	Satisfactory	Satisfactory	Poor	SD	59830
June 2011	48.0	Poor	Satisfactory	Satisfactory	Poor	SD	59830
May 2010	47.9	Poor	Good	Satisfactory	Poor	SD	60608
May 2009	47.9	Poor	Good	Satisfactory	Poor	SD	62361
May 2008	47.9	Poor	Satisfactory	Satisfactory	Poor	SD	60614
November 2007	47.9	Poor	Good	Satisfactory	Poor	SD	64217
September 2005	74.9	Fair	Satisfactory	Satisfactory	Good	-	54063
September 2003	74.9	Fair	Satisfactory	Satisfactory	Good	-	52950
September 2001	74.9	Fair	Satisfactory	Satisfactory	Good	-	53538
October 1999	75.0	Fair	Satisfactory	Satisfactory	Good	-	50973
September 1998	75.0	Fair	Satisfactory	Satisfactory	Good	-	50973
October 1995	75.0	Fair	Satisfactory	Satisfactory	Good	-	60108
September 1994	75.0	Fair	Satisfactory	Satisfactory	Good	-	57978
September 1992	75.0	Fair	Satisfactory	Satisfactory	Good	-	58333
October 1991	75.0	Fair	Satisfactory	Satisfactory	Good	-	56002