IS 270 E over MISSISSIPPI RVR

Map

Coordinates:
+38.76528, -90.17581
38°45'55" N, 90°10'33" 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:	52.5 ft. `[16.0 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:	59,788 `[as of 2017]`
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]`
Sufficiency rating:	66.0

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
June 2017	Fair	Fair	Fair	Fair	59788	66.0
June 2015	Fair	Fair	Fair	Fair	57243	63.0
June 2014	Poor	Satisfactory	Poor	Poor	55925	48.0
June 2013	Poor	Satisfactory	Poor	Poor	58003	48.0
June 2012	Poor	Satisfactory	Satisfactory	Poor	59830	48.0
June 2011	Poor	Satisfactory	Satisfactory	Poor	59830	48.0
May 2010	Poor	Good	Satisfactory	Poor	60608	47.9
May 2009	Poor	Good	Satisfactory	Poor	62361	47.9
May 2008	Poor	Satisfactory	Satisfactory	Poor	60614	47.9
November 2007	Poor	Good	Satisfactory	Poor	64217	47.9
September 2005	Fair	Satisfactory	Satisfactory	Good	54063	74.9
September 2003	Fair	Satisfactory	Satisfactory	Good	52950	74.9
September 2001	Fair	Satisfactory	Satisfactory	Good	53538	74.9
October 1999	Fair	Satisfactory	Satisfactory	Good	50973	75.0
September 1998	Fair	Satisfactory	Satisfactory	Good	50973	75.0
October 1995	Fair	Satisfactory	Satisfactory	Good	60108	75.0
September 1994	Fair	Satisfactory	Satisfactory	Good	57978	75.0
September 1992	Fair	Satisfactory	Satisfactory	Good	58333	75.0
October 1991	Fair	Satisfactory	Satisfactory	Good	56002	75.0

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Steel Girder/Beam	linear ft.	39,692	39,692	0	0	0
Steel Protective Coating	sq. ft.	609,117	609,117	0	0	0
Steel Stringer	linear ft.	14,812	14,812	0	0	0
Steel Protective Coating	sq. ft.	53,136	53,136	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	348,359	348,359	0	0	0
Wearing Surfaces	sq. ft.	303,016	303,016	0	0	0
Substructure
Reinforced Concrete Column	each	84	84	0	0	0
Reinforced Concrete Abutment	linear ft.	191	191	0	0	0
Reinforced Concrete Pier Cap	linear ft.	2,966	2,966	0	0	0
Joints
Compression Joint	linear ft.	546	546	0	0	0
Open Joint	linear ft.	656	656	0	0	0
Bearings
Movable Bearing	each	252	252	0	0	0
Steel Protective Coating	sq. ft.	252	252	0	0	0
Fixed Bearing	each	116	116	0	0	0
Steel Protective Coating	sq. ft.	116	116	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	10,822	10,822	0	0	0
Reinforced Concrete Bridge Rail	linear ft.	10,822	10,822	0	0	0