US Bridges

Hubbell Ave over Four Mile Creek

Fair

Polk County, Iowa · 079232901 · Structure no. 000000000003740

Built
2002
23 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
184 ft
4 main spans
Daily traffic
8,411
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hubbell Ave over Four Mile Creek is a concrete continuous slab carrying Hubbell Ave over Four Mile Creek in Polk County, Iowa. It was built in 2002, so it is 23 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 6 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 8,411 vehicles a day, roughly 2% of them trucks, projected to reach 8,411 by 2043. The structure is 184 ft (56.1 m) long and 88 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHubbell Ave
CrossesFour Mile Creek
Location079232901
RouteCity Street 0
StateIowa
Coordinates41.62555, -93.55142
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating59.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length184 ft (56.1 m)
Longest span51 ft (15.5 m)
Deck width88 ft (26.7 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,411 (2022)
Projected traffic8,411 by 2043
Trucks2%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hubbell Ave over Four Mile Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Hubbell Ave over Four Mile 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 July 2023.

How much traffic does Hubbell Ave over Four Mile Creek carry?

About 8,411 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Hubbell Ave over Four Mile Creek?

The structure is 184 ft (56.1 m) long with a longest span of 51 ft (15.5 m) and a deck 88 ft wide.

Who owns Hubbell Ave over Four Mile Creek?

It is owned by the City or Municipal Highway Agency.