390th ST over Maquoketa River

Fair Condition68 years old108 vehicles/day

Location

StateIowa
CountyClayton
Location091063103
Carries390th ST
CrossesMaquoketa River
Coordinates42.65877, -91.58719

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure5 (Fair)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length125.0 ft (38.1 m)
Max Span48.9 ft (14.9 m)
Deck Width26.2 ft (8 m)
Deck Area304.8 sq m
Main Spans3
Year Built1958

Traffic

Avg Daily Traffic108 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000118540

Nearby Bridges

Acorn RD over Stream 0.4 mi Good Acorn RD over Stream 0.7 mi Good 390th ST over Small Stream 0.7 mi Good Loc 400th ST over Maquoketa River 1.1 mi Good Loc 110th AVE over Stream 2.0 mi Fair B Ave. over Bruce Creek 2.1 mi Poor Backbone ST Pk over Stream 2.1 mi Fair Ia 3 over Maquoketa River 2.4 mi Fair HWY 410 over Drainage Ditch 2.5 mi Fair Loc 130th AVE over Stream 2.7 mi Good