I 93 SB B16-SB4 over COMB CAMBRIGE&MBTA/BMRR

Map

Coordinates:
+42.38278, -71.07694
42°22'58" N, 71°04'37" W

Source: National Bridge Inventory (2010 edition)
Information not verified. Use at your own risk.

Name:	I 93 SB B16-SB4 over COMB CAMBRIGE&MBTA/BMRR
Structure number:	B162813EGDOTNBI
Location:	1.2 MI N OF JCT I93&US1
Purpose:	Carries highway over highway and railroad
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	212.0 ft. `[64.6 m]`
Total length:	1214.0 ft. `[370.0 m]`
Roadway width between curbs:	65.0 ft. `[19.8 m]`
Deck width edge-to-edge:	71.2 ft. `[21.7 m]`
Vertical clearance above deck:	15.1 ft. `[4.6 m]`
Vertical clearance below bridge:	14.8 ft. `[4.5 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 / HS 20 `[5]`
Number of main spans:	11
Main spans material:	Steel `[3]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Bituminous `[6]`

Status:	Open, no restriction `[A]`
Average daily traffic:	75,900 `[as of 2009]`
Truck traffic:	12% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Fair `[5 out of 9]`
Scour condition:	Bridge not over waterway. `[N]`
Operating rating:	48.5 tons `[44.1 metric tons]`
Inventory rating:	35.6 tons `[32.4 metric tons]`
Evaluation:	Functionally obsolete `[2]`
Sufficiency rating:	69.8
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$33,488,000