OLD U.S. 280 over CAHABA RIVER

Map 

Facts 

Name:	OLD U.S. 280 over CAHABA RIVER
Structure number:	000311
Location:	OLD 280 & CAHABA RIVER
Purpose:	Carries highway over waterway
Route classification:	Local (Urban) [19]
Length of largest span:	65.9 ft. [20.1 m]
Total length:	325.1 ft. [99.1 m]
Roadway width between curbs:	24.0 ft. [7.3 m]
Deck width edge-to-edge:	26.6 ft. [8.1 m]
Owner:	City or Municipal Highway Agency [04]
Year built:	1925
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:	4
Main spans material:	Concrete [1]
Main spans design:	Stringer/Multi-beam or girder [02]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) [1]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	6,000 [as of 2009]
Truck traffic:	1% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
Channel protection:	Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:	Bridge with "unknown" foundation that has not been evaluated for scour. [U]
Operating rating:	44.0 tons [40.0 metric tons]
Inventory rating:	26.4 tons [24.0 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	69.1
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:	$2,978,000

2000 Inspection 

Status:	Posted for load [P]
Average daily traffic:	2,000 [as of 1996]
Truck traffic:	10% of total traffic
Deck condition:	Fair [5 out of 9]
Superstructure condition:	Poor [4 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
Channel protection:	Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	16.0 tons [14.5 metric tons]
Inventory rating:	12.0 tons [10.9 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	23.0
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$180,000

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