I 93 SB over COMB I90 & AMTRAK

Map 

Facts 

Name:	I 93 SB over COMB I90 & AMTRAK
Structure number:	B166569Q6DOTNBI
Location:	UNIT 4
Purpose:	Carries highway over highway and railroad
Route classification:	Principal Arterial - Interstate (Urban) [11]
Length of largest span:	205.4 ft. [62.6 m]
Total length:	633.9 ft. [193.2 m]
Roadway width between curbs:	55.1 ft. [16.8 m]
Deck width edge-to-edge:	57.4 ft. [17.5 m]
Vertical clearance below bridge:	28.5 ft. [8.7 m]
Owner:	State Highway Agency [01]
Year built:	2000
Historic significance:	Historical significance is not determinable at this time [4]
Design load:	MS 18 / HS 20 [5]
Number of main spans:	4
Main spans material:	Prestressed concrete continuous [6]
Main spans design:	Segmental box girder [21]
Deck type:	Other [9]
Wearing surface:	Latex Concrete or similar additive [3]

Latest Available Inspection: August 2015 

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction [A]
Average daily traffic:	106,231 [as of 2011]
Truck traffic:	7% of total traffic
Deck condition:	Good [7 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:	Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:	Superior to present desirable criteria [9]
Roadway alignment appraisal:	Equal to present desirable criteria [8]
Pier/abutment protection:	Navigation protection not required [1]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	50.7 tons [46.1 metric tons]
Inventory rating:	30.4 tons [27.6 metric tons]
Sufficiency rating:	62.6
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:	$19,114,000

Previous Inspections 

Date	Suff. Rating	Condition	Deck	Superstructure	Substructure	SD/FO	ADT
August 2015	62.6	Fair	Good	Satisfactory	Good	FO	106231
August 2013	62.6	Good	Good	Good	Good	FO	106231
August 2011	67.9	Good	Good	Good	Good	FO	91800
June 2009	67.9	Good	Good	Good	Good	FO	91800