420th Ave. over Mill Creek

Good Condition5 years old166 vehicles/day

Location

StateIowa
CountyClinton
Location082e61602
Carries420th Ave.
CrossesMill Creek
Coordinates41.91116, -90.27672

Condition Ratings

Overall ConditionGood
Deck8 (Very Good)
Superstructure8 (Very Good)
Substructure9 (Excellent)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length24.9 ft (7.6 m)
Max Span22.0 ft (6.7 m)
Deck Width32.2 ft (9.8 m)
Deck Area74.5 sq m
Main Spans1
Year Built2021

Traffic

Avg Daily Traffic166 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000124301

Nearby Bridges

190th St. over Mill Creek 1.7 mi Good 195th ST over Mill Creek 2.1 mi Good 210th St. over Stream 2.6 mi Good 410th Ave. over Harts Mill Creek 2.7 mi Good 420th Ave. over Creek 2.7 mi Fair 210th St. over Stream 2.7 mi Good 432nd Ave. over Spring Creek 3.0 mi Good 390th Ave. over Stream 3.0 mi Good 160th ST over South Branch Elk River 3.1 mi Good 400th Ave. over South Branch Elk River 3.2 mi Fair