US Bridges

Hilton RD over Soap Creek

FairPosted for load

Lee County, Iowa · 000000000 · Structure no. 000000000006900

Built
1933
92 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
46 ft
1 main span
Daily traffic
660
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hilton RD over Soap Creek is a concrete culvert carrying Hilton RD over Soap Creek in Lee County, Iowa. It was built in 1933, so it is 92 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 660 vehicles a day, roughly 13% of them trucks, projected to reach 660 by 2044. The structure is 46 ft (14 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesHilton RD
CrossesSoap Creek
Location000000000
RouteCity Street 0
CountyLee County
StateIowa
Coordinates40.39623, -91.41038
Functional classUrban Minor 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length46 ft (14 m)
Longest span40 ft (12.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic660 (2022)
Projected traffic660 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hilton RD over Soap Creek built?

It was built in 1933, making it 92 years old in 2025.

What condition is Hilton RD over Soap 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 May 2024.

How much traffic does Hilton RD over Soap Creek carry?

About 660 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Hilton RD over Soap Creek?

The structure is 46 ft (14 m) long with a longest span of 40 ft (12.2 m).

Who owns Hilton RD over Soap Creek?

It is owned by the City or Municipal Highway Agency.