US Bridges

EB US 20 over Sunnybrook DR

Fair

Woodbury County, Iowa · 1.7 Mi. W of Ia 12 · Structure no. 000000000603740

Built
1978
47 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
159 ft
3 main spans
Daily traffic
11,600
2022 count
Owner
State
State Highway Agency

About this bridge

EB US 20 over Sunnybrook DR is a prestressed concrete stringer/multi-beam or girder carrying EB US 20 over Sunnybrook DR in Woodbury County, Iowa. It was built in 1978, so it is 47 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,600 vehicles a day, roughly 15% of them trucks, projected to reach 11,600 by 2044. The structure is 159 ft (48.5 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesEB US 20
CrossesSunnybrook DR
Location1.7 Mi. W of Ia 12
RouteU.S. Route 20
CountyWoodbury County
StateIowa
Coordinates42.45352, -96.33411
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.3 US tons
Inventory rating53.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span83 ft (25.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,600 (2022)
Projected traffic11,600 by 2044
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was EB US 20 over Sunnybrook DR built?

It was built in 1978, making it 47 years old in 2025.

What condition is EB US 20 over Sunnybrook DR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.

How much traffic does EB US 20 over Sunnybrook DR carry?

About 11,600 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is EB US 20 over Sunnybrook DR?

The structure is 159 ft (48.5 m) long with a longest span of 83 ft (25.3 m) and a deck 43 ft wide.

Who owns EB US 20 over Sunnybrook DR?

It is owned by the State Highway Agency.