US Bridges

US 20 EB over Elliot Creek

Fair

Woodbury County, Iowa · 6.0 Mi. W of Jct. Ia 140 · Structure no. 000000000052891

Built
2015
10 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
183 ft
3 main spans
Daily traffic
5,200
2022 count
Owner
State
State Highway Agency

About this bridge

US 20 EB over Elliot Creek is a steel continuous stringer/multi-beam or girder carrying US 20 EB over Elliot Creek in Woodbury County, Iowa. It was built in 2015, so it is 10 years old, younger 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 5,200 vehicles a day, roughly 15% of them trucks, projected to reach 5,200 by 2043. The structure is 183 ft (55.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 20 EB
CrossesElliot Creek
Location6.0 Mi. W of Jct. Ia 140
RouteU.S. Route 20
CountyWoodbury County
StateIowa
Coordinates42.47508, -96.19019
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 23 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length183 ft (55.8 m)
Longest span72 ft (21.9 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,200 (2022)
Projected traffic5,200 by 2043
Trucks15%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 20 EB over Elliot Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is US 20 EB over Elliot Creek 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 2023.

How much traffic does US 20 EB over Elliot Creek carry?

About 5,200 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is US 20 EB over Elliot Creek?

The structure is 183 ft (55.8 m) long with a longest span of 72 ft (21.9 m) and a deck 43 ft wide.

Who owns US 20 EB over Elliot Creek?

It is owned by the State Highway Agency.