US 84 over MISSISSIPPI RIVER

Map

Coordinates:
+31.55600, -91.41619
31°33'22" N, 91°24'58" W

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

Name:	US 84 over MISSISSIPPI RIVER
Structure number:	21000840010001A
Location:	MISS/LA STATE LINE
Purpose:	Carries highway over waterway
Route classification:	Other Principal Arterial (Urban) `[14]`
Length of largest span:	875.0 ft. `[266.7 m]`
Total length:	4205.3 ft. `[1281.7 m]`
Roadway width between curbs:	24.0 ft. `[7.3 m]`
Deck width edge-to-edge:	34.1 ft. `[10.4 m]`
Vertical clearance above deck:	15.7 ft. `[4.8 m]`
Vertical clearance below bridge:	59.1 ft. `[18.0 m]`
Owner:	State Highway Agency `[01]`
Year built:	1940
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	M 13.5 / H 15 `[2]`
Number of main spans:	5
Main spans material:	Steel continuous `[4]`
Main spans design:	Truss - Thru `[10]`
Deck type:	Concrete Cast-in-Place `[1]`

Good/Fair/Poor Condition:	Fair
Status:	Posted for load `[P]`
Average daily traffic:	12,000 `[as of 2017]`
Truck traffic:	7% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Satisfactory `[6 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]`
Water adequacy appraisal:	Equal to present desirable criteria `[8]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Channel protection:	Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. `[7]`
Pier/abutment protection:	Navigation protection not required `[1]`
Scour condition:	Bridge foundations determined to be stable for assessed or calculated scour condition. `[5]`
Sufficiency rating:	50.4
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. `[31]`
Estimated cost of work:	$999,999,000

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
October 2018	Fair	Satisfactory	Fair	Satisfactory	12000	50.4
October 2016	Fair	Satisfactory	Fair	Satisfactory	11500	47.8
October 2014	Fair	Satisfactory	Fair	Satisfactory	11500	48.9
September 2012	Fair	Satisfactory	Fair	Satisfactory	11500	50.5
December 2010	Fair	Good	Fair	Satisfactory	12000	50.5
March 2010	Fair	Good	Fair	Satisfactory	12000	50.5
December 2008	Poor	Good	Poor	Satisfactory	13000	41.8
September 2007	Fair	Good	Fair	Satisfactory	13000	53.4
May 2006	Fair	Very Good	Satisfactory	Satisfactory	12000	63.7
January 2003	Fair	Very Good	Good	Satisfactory	12000	63.7
October 2001	Fair	Very Good	Good	Satisfactory	13000	59.6
August 2000	Fair	Good	Fair	Satisfactory	11690	49.5
February 2000	Fair	Very Good	Good	Satisfactory	11690	59.7
February 1999	Fair	Very Good	Good	Satisfactory	11690	59.7
May 1996	Good	Very Good	Very Good	Good	11690	50.5
February 1995	Good	Very Good	Very Good	Very Good	11690	50.5
December 1991	Good	Very Good	Very Good	Very Good	11690	50.5
December 1989	Good	Good	Very Good	Very Good	11690	57.6

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.	1,640	1,520	120	0	0
Steel Protective Coating	sq. ft.	28,569	0	0	28,554	15
Steel Stringer	linear ft.	11,492	11,222	0	270	0
Steel Protective Coating	sq. ft.	102,202	95,004	1,080	6,118	0
Deck
Reinforced Concrete Deck	sq. ft.	100,776	0	100,776	0	0
Superstructure
Steel Truss	linear ft.	7,328	0	1,210	6,118	0
Steel Protective Coating	sq. ft.	551,516	468,000	52,758	30,758	0
Steel Floor Beam	linear ft.	3,376	3,099	264	13	0
Steel Protective Coating	sq. ft.	51,645	0	0	51,645	0
Steel Pin or Pin & Hangar Assembly	each	78	18	6	54	0
Steel Protective Coating	sq. ft.	780	0	540	240	0
Steel Gusset Plate	each	396	0	0	396	0
Steel Protective Coating	sq. ft.	3,960	0	0	2,970	990
Substructure
Reinforced Concrete Column	each	12	12	0	0	0
Reinforced Concrete Pier Wall	linear ft.	192	0	192	0	0
Reinforced Concrete Abutment	linear ft.	100	0	100	0	0
Reinforced Concrete Pier Cap	linear ft.	133	133	0	0	0
Joints
Open Joint	linear ft.	600	576	0	24	0
Assembly without Seal Joint	linear ft.	144	144	0	0	0
Bearings
Movable Bearing	each	12	4	8	0	0
Steel Protective Coating	sq. ft.	120	0	40	80	0
Fixed Bearing	each	22	22	0	0	0
Steel Protective Coating	sq. ft.	220	220	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	8,398	8,188	210	0	0
Steel Protective Coating	sq. ft.	83,980	0	83,980	0	0