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550TH AVE over KEIGLEY BRANCH

Map 

Coordinates:
+42.23611, -94.00278
42°14'10" N, 94°00'10" W
Source: National Bridge Inventory (1992, 2000, 2010 editions)
Information not verified. Use at your own risk.

Facts 

Name:550TH AVE over KEIGLEY BRANCH
Structure number:000000000316480
Location:0852436
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:44.9 ft. [13.7 m]
Total length:46.9 ft. [14.3 m]
Owner:County Highway Agency [02]
Year built:1913
Historic significance:Bridge is eligible for the National Register of Historic Places [2]
Main span material:Concrete [1]
Main span design:Culvert [19]
Deck type:Not applicable [N]

2010 Inspection 

Status:Open, no restriction [A]
Average daily traffic:80 [as of 2007]
Truck traffic:12% of total traffic
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]
Culvert condition:Deterioration or initial disintegration, minor chloride contamination, cracking with some leaching, or spalls on concrete or masonry walls and slabs. Local minor scouring at curtain walls, wingwalls or pipes. Metal culverts have a smooth curvature, non-symmetrical shape, significant corrosion or moderate pitting. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:37.6 tons [34.2 metric tons]
Inventory rating:26.7 tons [24.3 metric tons]
Sufficiency rating:89.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$168,000

2000 Inspection 

Status:Open, no restriction [A]
Average daily traffic:110 [as of 1991]
Truck traffic:14% of total traffic
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]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:37.6 tons [34.2 metric tons]
Inventory rating:26.7 tons [24.3 metric tons]
Sufficiency rating:73.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$155,000

1992 Inspection 

Status:Open, no restriction [A]
Average daily traffic:110 [as of 1982]
Truck traffic:3% of total traffic
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]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Scour calculation/evaluation has not been made. [6]
Operating rating:37.6 tons [34.2 metric tons]
Inventory rating:26.7 tons [24.3 metric tons]
Sufficiency rating:73.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$155,000