US Bridges

290th ST over S.Br.Crooked Creek

FairPosted for load

Webster County, Iowa · 087280805 · Structure no. 000000000052320

Built
1950
75 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
1,147
2022 count
Owner
County
County Highway Agency

About this bridge

290th ST over S.Br.Crooked Creek is a steel stringer/multi-beam or girder carrying 290th ST over S.Br.Crooked Creek in Webster County, Iowa. It was built in 1950, so it is 75 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,147 vehicles a day, roughly 8% of them trucks, projected to reach 1,147 by 2043. The structure is 45 ft (13.7 m) long and 32 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
Carries290th ST
CrossesS.Br.Crooked Creek
Location087280805
RouteCounty Highway 0
CountyWebster County
StateIowa
Coordinates42.3681, -94.13376
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.2 US tons
Inventory rating17.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length45 ft (13.7 m)
Longest span39 ft (11.9 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,147 (2022)
Projected traffic1,147 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 290th ST over S.Br.Crooked Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is 290th ST over S.Br.Crooked 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 November 2023.

How much traffic does 290th ST over S.Br.Crooked Creek carry?

About 1,147 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is 290th ST over S.Br.Crooked Creek?

The structure is 45 ft (13.7 m) long with a longest span of 39 ft (11.9 m) and a deck 32 ft wide.

Who owns 290th ST over S.Br.Crooked Creek?

It is owned by the County Highway Agency.