PROJECT OVERVIEW
The design of this bridge involves one of the first uses of the Inverted Tee Girders in the State of Iowa. Although they had been used in Nebraska prior to this project, it was on a limited basis. Because of vertical height constraints and the restrictions caused by the need to stage construction, while leaving the existing piers in place, the use of the Inverted Tee Girders allowed for more flexibility than would either a Continuous Concrete Slab Bridge or a Pretensioned Prestressed Concrete Beam Bridge. Although this bridge is being constructed over the Union Pacific Railroad tracks, the use of the Inverted Tee Girder resulted in the elimination of the need for false work which should greatly ease construction. Bridge aesthetics played an important role in this structure with the use of ornamental railing and light pole bases.
The Design of this bridge is by HR Green Company. The bridge is expected to start construction in the Spring of 2000 and take 165 days to complete. The bridge has been successfully completed.
Bridge Specifics.
Feature Carried: Hwy 30/67
Feature Crossed: Union Pacific Railroad Spur Line
Iowa DOT Project #: NHS-30-9(94)—19-23
Iowa DOT File #: 29368
Iowa DOT Design #: 299
Total Length: 50.4 M (165’)
Curb to Curb: 22.8 M (74.8’)
Number of Spans: 3
Maximum Span: 19.4 M (63.6’)
Skew of Bridge: 7° -30" Rt. Ahead
Type of Superstructure: Inverted Tee Girders
Abutments: Integral Abutments
Piers: MP 10A Piers
Sidewalks: Both Sides
Unique Features: Inverted Tee Girders
Includes aesthetics as part of railings
Staged Construction: Yes – Will be built in two stages
Year Built: 2000 (Est)
Cost: $1,467,660 (Est)
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