US 30 over Calamus Drainage Ditch

Fair Condition71 years old3,430 vehicles/day

Location

StateIowa
CountyClinton
Location1.5 Mi. W Of SR Y44
CarriesUS 30
CrossesCalamus Drainage Ditch
Coordinates41.82946, -90.79146

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length184.1 ft (56.1 m)
Max Span69.9 ft (21.3 m)
Deck Width34.1 ft (10.4 m)
Deck Area583.4 sq m
Main Spans3
Year Built1955

Traffic

Avg Daily Traffic3,430 (2022)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000020760

Nearby Bridges

235th Street over Branch Of Wapsipinicon 0.3 mi Poor US 30 over E Chan Wapsipinicon Rvr 0.3 mi Fair 235th Street over Wapsipinicon River 1.0 mi Poor US 30 over Wapsipinicon River 1.1 mi Fair 158th AVE over Creek 1.2 mi Good Y-44 over Calamus Creek 1.6 mi Good US 30 over Wapsipinicon River 1.6 mi Fair 235th Street over Overflow Of Wapsipinicon 1.6 mi Good US 30 over Over Up Rr 2.0 mi Fair 225th St. over Small Stream 2.3 mi Fair