EB US 20 over Blackhawk Creek

Fair Condition43 years old12,400 vehicles/day

Location

StateIowa
CountyBlack Hawk
Location0.7 Mi. W Of Jct. US 63
CarriesEB US 20
CrossesBlackhawk Creek
Coordinates42.46130, -92.41863

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure8 (Very Good)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length420.9 ft (128.3 m)
Max Span96.1 ft (29.3 m)
Deck Width43.3 ft (13.2 m)
Deck Area1693.6 sq m
Main Spans5
Year Built1983

Traffic

Avg Daily Traffic12,400 (2022)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000605650

Nearby Bridges

WB US 20 over Blackhawk Creek 0.1 mi Good Ranchero RD over Drainage 0.3 mi Good Ranchero RD over Black Hawk Creek 0.4 mi Fair W Ridgeway AVE over Black Hawk Creek 0.6 mi Fair US 20 Off Ramp over US 63 0.7 mi Good EB US 20 over US 63 Sergeant RD Trail 0.7 mi Fair WB US 20 over US 63 Sergeant RD Trail 0.7 mi Good US 63 over Stream 0.8 mi Fair W 4th ST over US 20 1.2 mi Fair Cedar Hts DR over Drainage 1.3 mi Fair