N51 over MISSOURI RIVER/CITY ST

Map

Coordinates:
+42.00714, -96.24280
42°00'26" N, 96°14'34" W

Source: National Bridge Inventory (1992, 2000, 2010 editions)
Information not verified. Use at your own risk.

Name:	N51 over MISSOURI RIVER/CITY ST
Structure number:	S051 03644
Location:	1E DECATUR
Purpose:	Carries highway over highway and waterway
Route classification:	Minor Arterial (Rural) `[06]`
Tolls:	Yes `[1]`
Length of largest span:	420.0 ft. `[128.0 m]`
Total length:	1956.1 ft. `[596.2 m]`
Roadway width between curbs:	22.6 ft. `[6.9 m]`
Deck width edge-to-edge:	24.0 ft. `[7.3 m]`
Vertical clearance above deck:	18.7 ft. `[5.7 m]`
Vertical clearance below bridge:	65.9 ft. `[20.1 m]`
Owner:	Private (other than railroad) `[26]`
Year built:	1950
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:	2
Main spans material:	Steel `[3]`
Main spans design:	Truss - Thru `[10]`
Deck type:	Open Grating `[3]`
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) `[1]`

Status:	Open, no restriction `[A]`
Average daily traffic:	1,925 `[as of 2008]`
Truck traffic:	10% of total traffic
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Fair `[5 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]`
Pier/abutment protection:	Navigation protection not required `[1]`
Scour condition:	Scour calculation/evaluation has not been made. `[6]`
Operating rating:	26.7 tons `[24.3 metric tons]`
Inventory rating:	15.8 tons `[14.4 metric tons]`
Evaluation:	Functionally obsolete `[2]`
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:	$8,038,000

Status:	Open, no restriction `[A]`
Average daily traffic:	1,745 `[as of 1998]`
Truck traffic:	10% of total traffic
Deck condition:	Very Good `[8 out of 9]`
Superstructure condition:	Good `[7 out of 9]`
Substructure condition:	Very Good `[8 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]`
Pier/abutment protection:	Navigation protection not required `[1]`
Scour condition:	Scour calculation/evaluation has not been made. `[6]`
Operating rating:	17.8 tons `[16.2 metric tons]`
Inventory rating:	17.8 tons `[16.2 metric tons]`
Evaluation:	Functionally obsolete `[2]`
Sufficiency rating:	50.0
Recommended work:	Widening of existing bridge with deck rehabilitation or replacement. `[34]`
Estimated cost of work:	$5,894,000

Status:	Open, no restriction `[A]`
Average daily traffic:	1,465 `[as of 1990]`
Truck traffic:	9% of total traffic
Deck condition:	Very Good `[8 out of 9]`
Superstructure condition:	Good `[7 out of 9]`
Substructure condition:	Very Good `[8 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]`
Pier/abutment protection:	Navigation protection not required `[1]`
Scour condition:	Scour calculation/evaluation has not been made. `[6]`
Operating rating:	18.6 tons `[16.9 metric tons]`
Inventory rating:	18.6 tons `[16.9 metric tons]`
Evaluation:	Functionally obsolete `[2]`
Sufficiency rating:	51.1
Recommended work:	Widening of existing bridge with deck rehabilitation or replacement. `[34]`
Estimated cost of work:	$4,198,000