474 TH AVENUE over BIG SIOUX RV

Map 

Facts 

Name:	474 TH AVENUE over BIG SIOUX RV
Structure number:	000000050200035
Location:	1.2 S OF DELL RAPIDS
Purpose:	Carries highway over waterway
Route classification:	Local (Rural) [09]
Length of largest span:	53.5 ft. [16.3 m]
Total length:	155.8 ft. [47.5 m]
Roadway width between curbs:	32.2 ft. [9.8 m]
Deck width edge-to-edge:	34.1 ft. [10.4 m]
Skew angle:	25°
Owner:	County Highway Agency [02]
Year built:	1997
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:	3
Main spans material:	Prestressed concrete continuous [6]
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:	50 [as of 2007]
Truck traffic:	2% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Very Good [8 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
Channel protection:	There are no noticeable or noteworthy deficiencies which affect the condition of the channel. [9]
Pier/abutment protection:	Navigation protection not required [1]
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:	36.0 tons [32.7 metric tons]
Inventory rating:	36.0 tons [32.7 metric tons]
Sufficiency rating:	95.0

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	50 [as of 1998]
Truck traffic:	2% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Very Good [8 out of 9]
Substructure condition:	Good [7 out of 9]
Channel protection:	There are no noticeable or noteworthy deficiencies which affect the condition of the channel. [9]
Pier/abutment protection:	Navigation protection not required [1]
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:	36.0 tons [32.7 metric tons]
Inventory rating:	36.0 tons [32.7 metric tons]
Sufficiency rating:	95.0

1992 Inspection 

Status:	Posted for load [P]
Average daily traffic:	50 [as of 1991]
Truck traffic:	2% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Satisfactory [6 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]
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:	11.9 tons [10.8 metric tons]
Inventory rating:	6.9 tons [6.3 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	31.5
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$400,000

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