US 6 over Clear Creek

Good

Johnson County, Iowa · 0.3 Mi. W of Jct. 1st Ave · Structure no. 000000000031531

Built: 1998; 27 years old
Condition: Good; inspected March 2023
Type: Slab; Concrete Continuous
Length: 213 ft; 5 main spans
Daily traffic: 27,200; 2022 count
Owner: State; State Highway Agency

About this bridge

US 6 over Clear Creek is a concrete continuous slab carrying US 6 over Clear Creek in Johnson County, Iowa. It was built in 1998, so it is 27 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 27,200 vehicles a day, roughly 2% of them trucks, projected to reach 27,200 by 2042. The structure is 213 ft (64.9 m) long and 94 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesUS 6

CrossesClear Creek

Location0.3 Mi. W of Jct. 1st Ave

RouteU.S. Route 6

CountyJohnson County

StateIowa

Coordinates41.67077, -91.57139

Functional classUrban Other Principal Arterial

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	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionMarch 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating98 US tons

Inventory rating68.3 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans5

Design loadH 20

Structure length213 ft (64.9 m)

Longest span46 ft (14 m)

Deck width94 ft (28.7 m)

Roadway width72 ft (21.9 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,200 (2022)

Projected traffic27,200 by 2042

Trucks2%

Lanes on structure5

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.9 mi (3 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 6 over Clear Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is US 6 over Clear 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 2023.

How much traffic does US 6 over Clear Creek carry?

About 27,200 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is US 6 over Clear Creek?

The structure is 213 ft (64.9 m) long with a longest span of 46 ft (14 m) and a deck 94 ft wide.

Who owns US 6 over Clear Creek?

It is owned by the State Highway Agency.