SR 20 over APALACHICOLA RIVER

Map 

Facts 

Name:	SR 20 over APALACHICOLA RIVER
Structure number:	470029
Location:	3.0mi EAST OF SR71
Purpose:	Carries highway over waterway
Route classification:	Principal Arterial - Other (Rural) [02]
Length of largest span:	279.9 ft. [85.3 m]
Total length:	8397.4 ft. [2559.4 m]
Roadway width between curbs:	24.0 ft. [7.3 m]
Deck width edge-to-edge:	26.6 ft. [8.1 m]
Vertical clearance above deck:	16.7 ft. [5.1 m]
Vertical clearance below bridge:	51.8 ft. [15.8 m]
Owner:	State Highway Agency [01]
Year built:	1938
Year reconstructed:	1998
Historic significance:	Bridge is on the National Register of Historic Places [1]
Design load:	MS 18+Mod / HS 20+Mod [6]
Number of main spans:	5
Main spans material:	Steel continuous [4]
Main spans design:	Truss - Thru [10]
Deck type:	Concrete Cast-in-Place [1]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	4,186 [as of 2008]
Truck traffic:	8% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
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:	None present but re-evaluation suggested [5]
Scour condition:	Bridge with "unknown" foundation that has not been evaluated for scour. [U]
Operating rating:	62.3 tons [56.6 metric tons]
Inventory rating:	37.4 tons [34.0 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	75.5

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	9,300 [as of 1997]
Truck traffic:	11% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Very Good [8 out of 9]
Substructure condition:	Very Good [8 out of 9]
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:	None present but re-evaluation suggested [5]
Scour condition:	Bridge with "unknown" foundation that has not been evaluated for scour. [U]
Operating rating:	61.8 tons [56.2 metric tons]
Inventory rating:	36.9 tons [33.5 metric tons]
Sufficiency rating:	73.4

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	7,962 [as of 1989]
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Good [7 out of 9]
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:	Scour calculation/evaluation has not been made. [6]
Operating rating:	61.4 tons [55.8 metric tons]
Inventory rating:	36.6 tons [33.3 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	46.5
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$45,700,000

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