I 275 over HILLSBOROUGH RIVER

Map 

Facts 

Name:	I 275 over HILLSBOROUGH RIVER
Structure number:	100135
Location:	1.2 MI W OF I 275 I 4 INT
Purpose:	Carries highway over highway and waterway
Route classification:	Principal Arterial - Interstate (Urban) [11]
Length of largest span:	104.3 ft. [31.8 m]
Total length:	905.9 ft. [276.1 m]
Roadway width between curbs:	64.0 ft. [19.5 m]
Deck width edge-to-edge:	82.7 ft. [25.2 m]
Vertical clearance above deck:	17.7 ft. [5.4 m]
Vertical clearance below bridge:	39.7 ft. [12.1 m]
Skew angle:	99°
Owner:	State Highway Agency [01]
Year built:	1964
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:	11
Main spans material:	Prestressed concrete [5]
Main spans design:	Stringer/Multi-beam or girder [02]
Deck type:	Concrete Cast-in-Place [1]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	102,000 [as of 2008]
Truck traffic:	4% 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:	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:	In place and functioning [2]
Scour condition:	Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:	58.9 tons [53.5 metric tons]
Inventory rating:	51.9 tons [47.2 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	84.9
Recommended work:	Other structural work, including hydraulic replacements. [38]
Estimated cost of work:	$114,000

2000 Inspection 

Average daily traffic:	1,500 [as of 1999]
Truck traffic:	1% of total traffic
Evaluation:	Not applicable [N]

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	72,059 [as of 1988]
Deck condition:	Good [7 out of 9]
Superstructure condition:	Very Good [8 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:	In place and functioning [2]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	58.4 tons [53.1 metric tons]
Inventory rating:	51.5 tons [46.8 metric tons]
Sufficiency rating:	73.1
Recommended work:	Other structural work, including hydraulic replacements. [38]
Estimated cost of work:	$490,000

Comments