IS 95/IS 495 over POTOMAC RIVER

Map

Coordinates:
+38.79308, -77.04631
38°47'35" N, 77°02'47" W

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

Name:	IS 95/IS 495 over POTOMAC RIVER
Structure number:	100000160173015
Location:	ON VIRGINIA LINE
Purpose:	Carries highway over waterway
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	270.0 ft. `[82.3 m]`
Total length:	6087.2 ft. `[1855.3 m]`
Roadway width between curbs:	104.0 ft. `[31.7 m]`
Deck width edge-to-edge:	123.7 ft. `[37.7 m]`
Vertical clearance above deck:	17.1 ft. `[5.2 m]`
Vertical clearance below bridge:	68.9 ft. `[21.0 m]`
Owner:	State Highway Agency `[01]`
Year built:	2008
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	MS 22.5 / HS 25 `[9]`
Number of main spans:	3
Main spans material:	Steel `[3]`
Main spans design:	Movable - Bascule `[16]`
Deck type:	Concrete Cast-in-Place `[1]`

Good/Fair/Poor Condition:	Good
Status:	Open, no restriction `[A]`
Average daily traffic:	87,402 `[as of 2006]`
Truck traffic:	10% of total traffic
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Very Good `[8 out of 9]`
Substructure condition:	Good `[7 out of 9]`
Structural appraisal:	Better than present minimum criteria `[7]`
Deck geometry appraisal:	Equal to present desirable criteria `[8]`
Water adequacy appraisal:	Superior to present desirable criteria `[9]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Channel protection:	Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. `[8]`
Pier/abutment protection:	In place and functioning `[2]`
Scour condition:	Bridge foundations determined to be stable for assessed or calculated scour condition. `[5]`
Sufficiency rating:	79.2

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
June 2018	Good	Good	Very Good	Good	87402	79.2
June 2016	Good	Good	Very Good	Good	87402	79.2
June 2014	Good	Good	Very Good	Good	87402	79.2
October 2012	Good	Good	Very Good	Good	87402	79.2
October 2010	Good	Good	Very Good	Good	87402	70.0

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.	46,585	46,563	22	0	0
Steel Protective Coating	sq. ft.	1,165,264	1,165,105	152	7	0
Steel Stringer	linear ft.	28,272	28,256	14	2	0
Steel Protective Coating	sq. ft.	189,841	189,779	53	9	0
Deck
Reinforced Concrete Deck	sq. ft.	770,271	733,464	36,806	1	0
Superstructure
Steel Floor Beam	linear ft.	27,832	27,802	26	4	0
Steel Protective Coating	sq. ft.	476,316	476,220	74	20	2
Reinforced Concrete Floor Beam	linear ft.	1,672	1,672	0	0	0
Substructure
Prestressed Concrete Column	each	72	18	50	4	0
Reinforced Concrete Abutment	linear ft.	299	291	6	2	0
Reinforced Concrete Pile Cap/Footing	linear ft.	893	893	0	0	0
Steel Pile	each	216	216	0	0	0
Prestressed Concrete Pier Cap	linear ft.	12,638	12,468	160	10	0
Joints
Assembly with Seal	each	903	903	0	0	0
Open Joint	linear ft.	511	261	250	0	0
Assembly without Seal Joint	linear ft.	903	0	903	0	0
Bearings
Movable Bearing	each	272	272	0	0	0
Steel Protective Coating	sq. ft.	5,984	5,984	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	18,699	18,689	10	0	0
Steel Protective Coating	sq. ft.	56,097	56,087	10	0	0
Reinforced Concrete Bridge Rail	linear ft.	17,524	13,033	4,491	0	0