I 93 SB B10-B16 over RR MBTA/BMRR

Map

Coordinates:
+42.38236, -71.07661
42°22'56" N, 71°04'36" W

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

Name:	I 93 SB B10-B16 over RR MBTA/BMRR
Structure number:	B162813EEDOTNBI
Location:	1 MI N OF JCT I93&US1
Purpose:	Carries highway over railroad
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	76.1 ft. `[23.2 m]`
Total length:	442.0 ft. `[134.7 m]`
Roadway width between curbs:	44.9 ft. `[13.7 m]`
Deck width edge-to-edge:	57.1 ft. `[17.4 m]`
Vertical clearance above deck:	17.1 ft. `[5.2 m]`
Vertical clearance below bridge:	32.8 ft. `[10.0 m]`
Skew angle:	99°
Owner:	State Highway Agency `[01]`
Year built:	1970
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:	6
Main spans material:	Steel `[3]`
Main spans design:	Girder and floorbeam system `[03]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Bituminous `[6]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	87,100 `[as of 2017]`
Truck traffic:	9% of total traffic
Deck condition:	Satisfactory `[6 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]`
Underclearances appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Roadway alignment appraisal:	Better than present minimum criteria `[7]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	73.0
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$12,169,000

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
July 2017	Fair	Satisfactory	Fair	Fair	87100	73.0
July 2015	Fair	Satisfactory	Fair	Fair	47940	77.5
July 2013	Fair	Satisfactory	Fair	Fair	47940	75.3
March 2011	Fair	Satisfactory	Fair	Fair	68700	72.9
June 2008	Fair	Satisfactory	Fair	Fair	68700	72.9

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.	1,798	1,611	142	45	0
Steel Protective Coating	sq. ft.	26,022	23,772	1,160	1,090	0
Steel Stringer	linear ft.	1,771	1,771	0	0	0
Steel Protective Coating	sq. ft.	12,324	12,324	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	25,920	25,868	24	28	0
Wearing Surfaces	sq. ft.	22,737	22,637	100	0	0
Superstructure
Steel Floor Beam	linear ft.	402	392	0	10	0
Steel Protective Coating	sq. ft.	5,020	4,895	125	0	0
Substructure
Steel Column	each	18	14	0	4	0
Steel Protective Coating	sq. ft.	37,406	37,358	0	48	0
Steel Pier Cap	linear ft.	587	367	135	85	0
Steel Protective Coating	sq. ft.	15,642	9,542	4,327	1,305	468
Joints
Open Joint	linear ft.	150	149	1	0	0
Bridge Rail
Other Material Bridge Rail	linear ft.	883	855	1	27	0