170th Street over Grand River

Poor Condition69 years old46 vehicles/day

Location

StateIowa
CountyUnion
Location072280703
Carries170th Street
CrossesGrand River
Coordinates41.05620, -94.11308

Condition Ratings

Overall ConditionPoor
Deck4 (Poor)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Channel/Waterway6 (Satisfactory)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length207.0 ft (63.1 m)
Max Span68.9 ft (21 m)
Deck Width22.0 ft (6.7 m)
Deck Area422.8 sq m
Main Spans3
Year Built1957

Traffic

Avg Daily Traffic46 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000325320

Nearby Bridges

Local over Small Stream 1.1 mi Poor Local over Grand River 1.2 mi Good FM over Grand River 1.3 mi Good Local B Level over Small Stream 1.5 mi Poor Local over Stream 1.5 mi Good FM over Three Mile Creek 1.8 mi Fair US 34 & 169 over Over Up Rr(aband) 2.0 mi Fair Local over Stream 2.0 mi Poor US 34 & 169 over Grand River 2.1 mi Fair 170th ST over Two Mile Creek 2.5 mi Good