I20W I55S over GALLATIN ST LYNCH CK

Map

Coordinates:
+32.27622, -90.19145
32°16'34" N, 90°11'29" W

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

Name:	I20W I55S over GALLATIN ST LYNCH CK
Structure number:	110002002504580
Location:	0.8 MI E I 55S/ I 20W
Purpose:	Carries highway over highway and waterway
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	80.1 ft. `[24.4 m]`
Total length:	880.0 ft. `[268.2 m]`
Roadway width between curbs:	50.9 ft. `[15.5 m]`
Deck width edge-to-edge:	53.8 ft. `[16.4 m]`
Vertical clearance below bridge:	16.4 ft. `[5.0 m]`
Owner:	State Highway Agency `[01]`
Year built:	1966
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:	3
Main spans material:	Concrete continuous `[2]`
Main spans design:	Box Beam or girders - Single or Spread `[06]`
Deck type:	Concrete Cast-in-Place `[1]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	55,000 `[as of 2015]`
Truck traffic:	13% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Satisfactory `[6 out of 9]`
Substructure condition:	Very Good `[8 out of 9]`
Structural appraisal:	Equal to present minimum criteria `[6]`
Deck geometry appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Underclearances appraisal:	Meets minimum tolerable limits to be left in place as is `[4]`
Water adequacy appraisal:	Equal to present desirable criteria `[8]`
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]`
Scour condition:	Bridge foundations determined to be stable for assessed or calculated scour condition. `[5]`
Sufficiency rating:	83.3

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
August 2016	Fair	Satisfactory	Satisfactory	Very Good	55000	83.3
August 2014	Fair	Satisfactory	Satisfactory	Very Good	56500	86.1
August 2012	Fair	Satisfactory	Satisfactory	Very Good	55000	86.2
July 2010	Good	Good	Very Good	Very Good	67000	85.5
June 2008	Good	Good	Very Good	Very Good	62500	83.8
June 2006	Good	Good	Very Good	Very Good	54500	87.2
October 2004	Good	Good	Very Good	Very Good	57500	73.4
September 2002	Good	Good	Very Good	Very Good	60000	86.9
September 2000	Good	Good	Very Good	Very Good	48500	85.0
September 1998	Good	Good	Very Good	Very Good	48500	85.0
February 1997	Good	Good	Very Good	Very Good	48500	85.0
February 1995	Good	Good	Very Good	Very Good	40300	84.6
April 1991	Good	Good	Very Good	Very Good	36640	84.9

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Reinforced Concrete Closed Web/Box Girder	linear ft.	1,401	1,401	0	0	0
Prestressed Concrete Girder/Beam	linear ft.	5,318	5,318	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	38,739	38,739	0	0	0
Wearing Surfaces	sq. ft.	47,346	44,861	0	0	2,485
Reinforced Concrete Top Flange	sq. ft.	8,609	8,609	0	0	0
Substructure
Prestressed Concrete Column	each	88	88	0	0	0
Reinforced Concrete Abutment	linear ft.	143	143	0	0	0
Reinforced Concrete Pier Cap	linear ft.	884	876	8	0	0
Joints
Open Joint	linear ft.	866	866	0	0	0
Assembly without Seal Joint	linear ft.	52	27	0	25	0
Bearings
Elastomeric Bearing	each	294	294	0	0	0
Movable Bearing	each	14	0	14	0	0
Steel Protective Coating	sq. ft.	14	0	0	14	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	1,759	1,759	0	0	0
Steel Protective Coating	sq. ft.	1,759	1,759	0	0	0
Reinforced Concrete Bridge Rail	linear ft.	1,759	1,759	0	0	0