PRESTON STREET over I-83 AND AMTRAK

Map 

Facts 

Name:	PRESTON STREET over I-83 AND AMTRAK
Structure number:	200000BC1204010
Location:	0.3 MI N MD STATE PEN
Purpose:	Carries highway and pedestrian walkway over highway and railroad
Route classification:	Local (Urban) [19]
Length of largest span:	101.1 ft. [30.8 m]
Total length:	145.0 ft. [44.2 m]
Roadway width between curbs:	40.0 ft. [12.2 m]
Deck width edge-to-edge:	65.9 ft. [20.1 m]
Vertical clearance below bridge:	17.1 ft. [5.2 m]
Skew angle:	14°
Owner:	City or Municipal Highway Agency [04]
Year built:	1959
Year reconstructed:	1993
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:	2
Main spans material:	Steel [3]
Main spans design:	Stringer/Multi-beam or girder [02]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) [1]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	18,200 [as of 2007]
Truck traffic:	5% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Satisfactory [6 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:	72.7
Recommended work:	Other structural work, including hydraulic replacements. [38]
Estimated cost of work:	$12,000

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	15,000 [as of 1994]
Truck traffic:	5% of total traffic
Deck condition:	Very Good [8 out of 9]
Superstructure condition:	Very Good [8 out of 9]
Substructure condition:	Good [7 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]
Sufficiency rating:	73.1
Recommended work:	Other structural work, including hydraulic replacements. [38]
Estimated cost of work:	$16,000

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	15,000 [as of 1972]
Deck condition:	Good [7 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	60.4 tons [54.9 metric tons]
Inventory rating:	37.6 tons [34.2 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	75.5

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