US Bridges

Ireland Avenue over Clear Creek

Good

Johnson County, Iowa · 080073304 · Structure no. 000000000205071

Built
1973
52 years old
Condition
Good
inspected April 2021
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
8,339
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ireland Avenue over Clear Creek is a concrete continuous slab carrying Ireland Avenue over Clear Creek in Johnson County, Iowa. It was built in 1973, so it is 52 years old, older 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 8,339 vehicles a day, roughly 11% of them trucks, projected to reach 8,339 by 2042. The structure is 128 ft (39 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesIreland Avenue
CrossesClear Creek
Location080073304
RouteCity Street 0
StateIowa
Coordinates41.70049, -91.66658
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.6 US tons
Inventory rating36.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span49 ft (14.9 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,339 (2022)
Projected traffic8,339 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCounty 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 Ireland Avenue over Clear Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Ireland Avenue 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 April 2021.

How much traffic does Ireland Avenue over Clear Creek carry?

About 8,339 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Ireland Avenue over Clear Creek?

The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns Ireland Avenue over Clear Creek?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.