Local over Hilton Creek

Good

Iowa County, Iowa · 080100503 · Structure no. 000000000190332

Built: 2005; 20 years old
Condition: Good; inspected March 2022
Type: Slab; Concrete Continuous
Length: 113 ft; 3 main spans
Daily traffic: 50; 2022 count
Owner: County; County Highway Agency

About this bridge

Local over Hilton Creek is a concrete continuous slab carrying Local over Hilton Creek in Iowa County, Iowa. It was built in 2005, so it is 20 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 50 by 2043. The structure is 113 ft (34.4 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesLocal

CrossesHilton Creek

Location080100503

RouteCounty Highway 0

CountyIowa County

StateIowa

Coordinates41.77459, -92.03341

Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Deck	8 Very Good	No problems noted.
Superstructure	8 Very Good	No problems noted.
Substructure	8 Very Good	No problems noted.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionMarch 2022

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation8: Equal to present desirable criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating91.8 US tons

Inventory rating54.9 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length113 ft (34.4 m)

Longest span44 ft (13.4 m)

Deck width26 ft (7.9 m)

Roadway width25 ft (7.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)

Projected traffic50 by 2043

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.9 mi (3 km)

TollOn a free road

National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency

Maintained byCounty Highway Agency

Historic statusPossibly eligible for the National Register; requires further investigation

Work proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Hilton Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Local over Hilton Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2022.

How much traffic does Local over Hilton Creek carry?

About 50 vehicles per day (2022 count).

How long is Local over Hilton Creek?

The structure is 113 ft (34.4 m) long with a longest span of 44 ft (13.4 m) and a deck 26 ft wide.

Who owns Local over Hilton Creek?

It is owned by the County Highway Agency.