Bridge Type
Main Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 280.4 m = 920.0 ft
Main Spans: 7 at 43 m = 141.1 ft
Approach Spans: 0
Skew: 20
Width, Roadway: 13.3 m = 43.6 ft (3 Lanes) and Out-To-Out: 14.2 m = 46.6 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Amity [01945]: Polk County [153], Iowa [19]
Owned by City or Municipal Highway Agency [04], DOT District: 0
78240800
Condition
Deck: Very Good [8]
Superstructure: Good [7]
Substructure: Very Good [8]
Loading
Design: MS 18 / HS 20 [5]
Operating: 80.6 metric ton = 88.7 tons (Load Factor(LF) [1])
Inventory: 48.3 metric ton = 53.1 tons (Load Factor(LF) [1])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: July 1999 [799] and Frequency: 24
Future Work
Work Needed: Other structural work: including hydraulic replacements. [38]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 8650 (2016) and Trucks: 0%
Future ADT: 8650 (In 2039
)