US Bridges

3rd ST over Hinkle Creek

Fair

Benton County, Iowa · 085101700 · Structure no. 000000000011551

Built
1985
40 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
143 ft
4 main spans
Daily traffic
2,550
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

3rd ST over Hinkle Creek is a concrete continuous slab carrying 3rd ST over Hinkle Creek in Benton County, Iowa. It was built in 1985, so it is 40 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 5 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 2,550 vehicles a day, roughly 5% of them trucks, projected to reach 2,550 by 2043. The structure is 143 ft (43.6 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries3rd ST
CrossesHinkle Creek
Location085101700
RouteCity Street 0
CountyBenton County
StateIowa
Coordinates42.16873, -92.03135
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating71.5 US tons
Inventory rating42.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span39 ft (11.9 m)
Deck width39 ft (11.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2021)
Projected traffic2,550 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 3rd ST over Hinkle Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is 3rd ST over Hinkle 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 April 2023.

How much traffic does 3rd ST over Hinkle Creek carry?

About 2,550 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 3rd ST over Hinkle Creek?

The structure is 143 ft (43.6 m) long with a longest span of 39 ft (11.9 m) and a deck 39 ft wide.

Who owns 3rd ST over Hinkle Creek?

It is owned by the City or Municipal Highway Agency.