ALTON ROAD over SEABOARD AIRLINE RR

Map 

Facts 

Name:	ALTON ROAD over SEABOARD AIRLINE RR
Structure number:	003890
Old structure number:	0000016137M0180 (from 1992 edition)
Location:	ALTON RD & SAL RR
Purpose:	Carries highway over railroad
Route classification:	Local (Urban) [19]
Length of largest span:	58.1 ft. [17.7 m]
Total length:	185.7 ft. [56.6 m]
Roadway width between curbs:	25.6 ft. [7.8 m]
Deck width edge-to-edge:	31.2 ft. [9.5 m]
Vertical clearance below bridge:	24.0 ft. [7.3 m]
Skew angle:	41°
Owner:	City or Municipal Highway Agency [04]
Year built:	1950
Historic significance:	Bridge is not eligible for the National Register of Historic Places [5]
Number of main spans:	5
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, posting recommended but not legally implemented [B]
Average daily traffic:	3,000 [as of 2004]
Truck traffic:	10% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	29.0 tons [26.4 metric tons]
Inventory rating:	17.4 tons [15.8 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	50.0
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$2,156,000

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	3,000 [as of 1996]
Truck traffic:	10% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	16.0 tons [14.5 metric tons]
Inventory rating:	12.0 tons [10.9 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	38.1
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$210,000

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	3,000 [as of 1989]
Truck traffic:	10% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	18.6 tons [16.9 metric tons]
Inventory rating:	12.4 tons [11.3 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	46.2
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$210,000

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