US Bridges

Half Moon Ave over Deer Creek

Good

Johnson County, Iowa · 079070504 · Structure no. 000000000204131

Built
2022
3 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
143
2021 count
Owner
County
County Highway Agency

About this bridge

Half Moon Ave over Deer Creek is a concrete slab carrying Half Moon Ave over Deer Creek in Johnson County, Iowa. It was built in 2022, so it is 3 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 143 vehicles a day, projected to reach 143 by 2043. The structure is 32 ft (9.9 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesHalf Moon Ave
CrossesDeer Creek
Location079070504
RouteCounty Highway 0
StateIowa
Coordinates41.68267, -91.69076
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.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length32 ft (9.9 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic143 (2021)
Projected traffic143 by 2043
Trucks0%
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

OwnerCounty 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 Half Moon Ave over Deer Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Half Moon Ave over Deer 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 May 2023.

How much traffic does Half Moon Ave over Deer Creek carry?

About 143 vehicles per day (2021 count).

How long is Half Moon Ave over Deer Creek?

The structure is 32 ft (9.9 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Half Moon Ave over Deer Creek?

It is owned by the County Highway Agency.