I 93 SB over COMB I90 & AMTRAK

Map

Coordinates:
+42.34624, -71.06091
42°20'46" N, 71°03'39" W

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

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 above deck:	16.7 ft. `[5.1 m]`
Vertical clearance below bridge:	13.1 ft. `[4.0 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]`

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]`
Sufficiency rating:	62.6
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$17,585,000

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
August 2017	Fair	Good	Satisfactory	Good	106231	62.6
August 2015	Fair	Good	Satisfactory	Good	106231	62.6
August 2013	Good	Good	Good	Good	106231	62.6
August 2011	Good	Good	Good	Good	91800	67.9
June 2009	Good	Good	Good	Good	91800	67.9

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

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Prestressed Concrete Closed Web/Box Girder	linear ft.	1,267	1,171	86	10	0
Deck
Prestressed Concrete Top Flange	sq. ft.	37,222	36,942	223	57	0
Wearing Surfaces	sq. ft.	35,638	34,438	1,199	1	0
Substructure
Reinforced Concrete Column	each	9	7	2	0	0
Reinforced Concrete Pier Wall	linear ft.	62	62	0	0	0
Reinforced Concrete Pier Cap	linear ft.	78	34	43	1	0
Joints
Assembly with Seal	each	115	88	27	0	0
Bearings
Elastomeric Bearing	each	20	14	6	0	0
Bridge Rail
Reinforced Concrete Bridge Rail	linear ft.	1,267	1,244	22	1	0