CR 550S over BIG WALNUT Creek

Map 

Facts 

Name:	CR 550S over BIG WALNUT Creek
Structure number:	6700111
Location:	0.1 E of CR 500W
Purpose:	Carries highway over waterway
Route classification:	Local (Rural) [09]
Length of largest span:	100.1 ft. [30.5 m]
Total length:	208.0 ft. [63.4 m]
Roadway width between curbs:	15.7 ft. [4.8 m]
Deck width edge-to-edge:	16.1 ft. [4.9 m]
Vertical clearance above deck:	13.8 ft. [4.2 m]
Owner:	County Highway Agency [02]
Year built:	1880
Historic significance:	Bridge is possibly eligible for the National Register of Historic Places [3]
Number of main spans:	2
Main spans material:	Wood or timber [7]
Main spans design:	Truss - Thru [10]
Deck type:	Wood or Timber [8]
Wearing surface:	Wood or Timber [7]

2010 Inspection 

Status:	Posted for load [P]
Average daily traffic:	500 [as of 2009]
Deck condition:	Fair [5 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Poor [4 out of 9]
Channel protection:	Bank and embankment protection is severely undermined. River control devices have severe damage. Large deposits of debris are in the channel. [4]
Scour condition:	Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Operating rating:	18.8 tons [17.1 metric tons]
Inventory rating:	13.9 tons [12.6 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	23.3
Recommended work:	Replacement of bridge or other structure because of relocation of road. [32]
Estimated cost of work:	$1,500,000

2000 Inspection 

Status:	Posted for load [P]
Average daily traffic:	422 [as of 1998]
Deck condition:	Good [7 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 foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:	18.8 tons [17.1 metric tons]
Inventory rating:	13.9 tons [12.6 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	45.3
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$922,000

1992 Inspection 

Status:	Posted for load [P]
Average daily traffic:	400 [as of 1990]
Deck condition:	Good [7 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Satisfactory [6 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]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	9.9 tons [9.0 metric tons]
Inventory rating:	7.9 tons [7.2 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	34.9
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$678,000

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