Ia 1 over Ralston Creek

Fair Condition94 years old13,500 vehicles/day

Location

StateIowa
CountyJohnson
Location0.6 Mi. N Of N Jct. US 6
CarriesIa 1
CrossesRalston Creek
Coordinates41.65781, -91.52898

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Channel/Waterway7 (Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length61.0 ft (18.6 m)
Max Span27.9 ft (8.5 m)
Deck Width79.4 ft (24.2 m)
Deck Area450.1 sq m
Main Spans2
Year Built1932 (reconstructed 2004)

Traffic

Avg Daily Traffic13,500 (2022)
Truck Traffic3%
Lanes On Bridge5

Inspection & Ownership

Last Inspection724
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000031740

Nearby Bridges

Van Buren ST over Ralston Creek 0.1 mi Poor College ST over Ralston Creek 0.1 mi Fair Washington ST over Ralston Creek 0.2 mi Poor Gilbert ST over Ralston Creek 0.2 mi Poor Johnson ST over Ralston Creek 0.2 mi Poor SB Ia 1 over Ralston Creek 0.3 mi Fair Prentiss ST over Ralston Creek 0.3 mi Good Iowa AVE over Ralston Creek 0.3 mi Poor Ia 1 NB over Ralston Creek 0.4 mi Good Dodge ST over Over Iais Rr 0.4 mi Poor