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US 30 over DAVISONS CREEK

Map

Coordinates:
+42.01944, -93.35556
42°01'10" N, 93°21'20" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 30 over DAVISONS CREEK
Structure number:000000000035340
Location:1.5 MILES W OF JCT IA 146
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:19.0 ft. [5.8 m]
Total length:52.2 ft. [15.9 m]
Owner:State Highway Agency [01]
Year built:1954
Year reconstructed:2002
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Number of main spans:3
Main spans material:Concrete continuous [2]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: December 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:12,400 [as of 2015]
Truck traffic:10% of total traffic
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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:41.5 tons [37.7 metric tons]
Inventory rating:21.8 tons [19.8 metric tons]
Sufficiency rating:54.5

Previous Inspections

DateSuff. RatingConditionCulvert ConditionSD/FOADT
December 201654.5Good7 out of 10-12400
December 201454.5Good7 out of 10-11800
December 201269.5Good7 out of 10-10100
December 201068.1Good7 out of 10-9900
December 200868.1Good7 out of 10-9300
December 200658.3Good7 out of 10-9500
November 200474.4Good7 out of 10-11000
March 200274.9Good7 out of 10-10400
August 200075.1Good7 out of 10-10200
November 199873.2Good7 out of 10-10100
October 199673.8Good7 out of 10-9400
March 199474.6Good7 out of 10-8600
December 199276.2Good8 out of 10-6800
February 199076.4Good8 out of 10-6600

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Culvert
Reinforced Concrete Culvertlinear ft.5484787000