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HWY BLAKEMORE ST over RR AMTRAK/MBTA

Suffolk County, Massachusetts

Map

Coordinates:
+42.28549, -71.11955
42°17'08" N, 71°07'10" W

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Facts

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

Name:	HWY BLAKEMORE ST over RR AMTRAK/MBTA
Structure number:	B16105390MUNNBI
Location:	3.8 W OF RT 93
Purpose:	Carries highway and pedestrian walkway over railroad
Route classification:	Local (Urban) `[19]`
Length of largest span:	70.9 ft. `[21.6 m]`
Total length:	75.1 ft. `[22.9 m]`
Roadway width between curbs:	22.0 ft. `[6.7 m]`
Deck width edge-to-edge:	41.0 ft. `[12.5 m]`
Vertical clearance below bridge:	16.4 ft. `[5.0 m]`
Owner:	City or Municipal Highway Agency `[04]`
Year built:	1882
Year reconstructed:	1950
Historic significance:	Historical significance is not determinable at this time `[4]`
Main span material:	Steel `[3]`
Main span design:	Girder and floorbeam system `[03]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Bituminous `[6]`

Latest Available Inspection: March 2017

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	13,200 `[as of 2017]`
Truck traffic:	5% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Good `[7 out of 9]`
Structural appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Deck geometry appraisal:	Basically intolerable requiring high priority of replacement `[2]`
Underclearances appraisal:	Basically intolerable requiring high priority of corrrective action `[3]`
Roadway alignment appraisal:	Meets minimum tolerable limits to be left in place as is `[4]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	58.9
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$1,490,000

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
March 2017	Fair	Satisfactory	Fair	Good	13200	58.9
March 2015	Fair	Satisfactory	Satisfactory	Good	9900	70.7
March 2013	Fair	Satisfactory	Satisfactory	Good	9900	70.7
March 2011	Fair	Satisfactory	Satisfactory	Good	9900	70.7
March 2009	Fair	Satisfactory	Satisfactory	Good	9900	70.7
March 2007	Fair	Satisfactory	Satisfactory	Good	9600	70.7
March 2005	Fair	Satisfactory	Satisfactory	Good	9400	70.8
November 2002	Fair	Satisfactory	Satisfactory	Good	13100	70.3
December 2000	Fair	Satisfactory	Satisfactory	Good	11200	70.5

Element Data

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.	144	0	66	72	6
Steel Protective Coating	sq. ft.	1,008	0	1,008	0	0
Deck
Reinforced Concrete Deck	sq. ft.	1,947	1,837	110	0	0
Wearing Surfaces	sq. ft.	1,653	827	826	0	0
Superstructure
Steel Floor Beam	linear ft.	776	0	776	0	0
Steel Protective Coating	sq. ft.	3,876	0	3,876	0	0
Substructure
Masonry Abutment	linear ft.	82	0	82	0	0
Bearings
Movable Bearing	each	2	0	2	0	0
Steel Protective Coating	sq. ft.	4	0	4	0	0
Fixed Bearing	each	2	0	2	0	0
Steel Protective Coating	sq. ft.	4	0	4	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	150	0	150	0	0
Steel Protective Coating	sq. ft.	600	0	600	0	0

© Copyright 2012-20, James Baughn
Disclaimer: All data is taken from the National Bridge Inventory and has not been verified.
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