PR 971 over SANTIAGO RIVER

Map 

Facts 

Name:	PR 971 over SANTIAGO RIVER
Structure number:	005741
Location:	1 KM NORTH OF NAGUABO
Purpose:	Carries highway over waterway
Route classification:	Local (Rural) [09]
Length of largest span:	30.8 ft. [9.4 m]
Total length:	30.8 ft. [9.4 m]
Roadway width between curbs:	20.0 ft. [6.1 m]
Deck width edge-to-edge:	23.3 ft. [7.1 m]
Owner:	State Highway Agency [01]
Year built:	1955
Historic significance:	Bridge is not eligible for the National Register of Historic Places [5]
Main span material:	Steel [3]
Main span design:	Stringer/Multi-beam or girder [02]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Bituminous [6]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	1,000 [as of 2005]
Truck traffic:	4% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Serious [3 out of 9]
Substructure condition:	Fair [5 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 the assessed or calculated scour condition. [8]
Operating rating:	34.4 tons [31.3 metric tons]
Inventory rating:	38.1 tons [34.6 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	30.8
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$191,000

2000 Inspection 

Status:	Open, posting recommended but not legally implemented [B]
Average daily traffic:	1,000 [as of 1997]
Truck traffic:	4% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Poor [4 out of 9]
Substructure condition:	Fair [5 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 is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:	17.8 tons [16.2 metric tons]
Inventory rating:	11.9 tons [10.8 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	16.3
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$280,000

1992 Inspection 

Status:	Open, posting recommended but not legally implemented [B]
Average daily traffic:	3,090 [as of 1987]
Truck traffic:	4% of total traffic
Deck condition:	Fair [5 out of 9]
Superstructure condition:	Poor [4 out of 9]
Substructure condition:	Poor [4 out of 9]
Channel protection:	Bank protection has failed. River control devices have been destroyed. Stream bed aggradation, degradation or lateral movement has changed the channel to now threaten the bridge and/or approach roadway. [3]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	24.8 tons [22.5 metric tons]
Inventory rating:	18.6 tons [16.9 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	29.8
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$588,000

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