I-35 over Drainage Ditch 23 & 31

Good Condition54 years old16,600 vehicles/day

Location

StateIowa
CountyHamilton
Location1.0 Mile N Of Jct SR D20
CarriesI-35
CrossesDrainage Ditch 23 & 31
Coordinates42.52906, -93.56680

Condition Ratings

Overall ConditionGood
Channel/Waterway8 (Very Good)
Culvert7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length21.0 ft (6.4 m)
Max Span9.8 ft (3 m)
Deck Area156.2 sq m
Main Spans2
Year Built1972

Traffic

Avg Daily Traffic16,600 (2023)
Truck Traffic28%
Lanes On Bridge4

Inspection & Ownership

Last Inspection324
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000603890

Nearby Bridges

Local over Drainage Ditch 0.5 mi Poor I 35 NB over Stream 0.8 mi Fair SB I-35 over Stream 0.8 mi Fair FM over Drainage Ditch 1.0 mi Poor Local over Drainage Ditch 1.0 mi Fair SR D-20 over I-35 1.0 mi Fair Local over Drainage Ditch 1.0 mi Fair Local over Drainage Ditch 1.3 mi Fair 170th ST over Drainage Ditch 1.5 mi Good Local over Drainage Ditch 1.6 mi Good