IS 55 S over CST GASCONADE ST

Map

Coordinates:
+38.58048, -90.22586
38°34'50" N, 90°13'33" W

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

Name:	IS 55 S over CST GASCONADE ST
Structure number:	878
Location:	S 3 T 44 N R 7 E
Purpose:	Carries highway over highway
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	69.9 ft. `[21.3 m]`
Total length:	161.1 ft. `[49.1 m]`
Roadway width between curbs:	54.1 ft. `[16.5 m]`
Deck width edge-to-edge:	56.8 ft. `[17.3 m]`
Vertical clearance below bridge:	15.1 ft. `[4.6 m]`
Skew angle:	44°
Owner:	State Highway Agency `[01]`
Year built:	1965
Year reconstructed:	1985
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:	3
Main spans material:	Concrete continuous `[2]`
Main spans design:	Slab `[01]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Bituminous `[6]`

Good/Fair/Poor Condition:	Fair
Status:	Posted for load `[P]`
Average daily traffic:	51,340 `[as of 2015]`
Truck traffic:	12% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Satisfactory `[6 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Structural appraisal:	Equal to present minimum criteria `[6]`
Deck geometry appraisal:	Basically intolerable requiring high priority of replacement `[2]`
Underclearances appraisal:	Equal to present minimum criteria `[6]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Scour condition:	Bridge not over waterway. `[N]`
Operating rating:	62.4 tons `[56.7 metric tons]`
Inventory rating:	37.6 tons `[34.2 metric tons]`
Sufficiency rating:	75.9
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$1,151,000

Date	Suff. Rating	Condition	Deck	Superstructure	Substructure	SD/FO	ADT
August 2015	75.9	Fair	Satisfactory	Satisfactory	Satisfactory	FO	51340
August 2013	75.6	Fair	Satisfactory	Satisfactory	Satisfactory	FO	56754
August 2011	73.6	Fair	Satisfactory	Satisfactory	Satisfactory	FO	50598
September 2009	73.7	Fair	Satisfactory	Satisfactory	Satisfactory	FO	51625
August 2007	73.5	Fair	Satisfactory	Satisfactory	Satisfactory	FO	55636
August 2005	73.9	Fair	Satisfactory	Satisfactory	Satisfactory	FO	49983
July 2003	73.9	Fair	Satisfactory	Satisfactory	Satisfactory	FO	49536
June 2001	72.9	Fair	Good	Good	Satisfactory	FO	48614