US Bridges

Four Mile Drive over Deer Creek

Good

Polk County, Iowa · 080231700 · Structure no. 000000000505695

Built
2022
3 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
12
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Four Mile Drive over Deer Creek is a concrete continuous culvert carrying Four Mile Drive over Deer Creek in Polk 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12 vehicles a day, projected to reach 12 by 2044. The structure is 26 ft (7.9 m) long and 182 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFour Mile Drive
CrossesDeer Creek
Location080231700
RouteCity Street 0
StateIowa
Coordinates41.74274, -93.55928
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert9 ExcellentNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.7 US tons
Inventory rating65.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width182 ft (55.5 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12 (2022)
Projected traffic12 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 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 Four Mile Drive over Deer Creek built?

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

What condition is Four Mile Drive 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 2024.

How much traffic does Four Mile Drive over Deer Creek carry?

About 12 vehicles per day (2022 count).

How long is Four Mile Drive over Deer Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 182 ft wide.

Who owns Four Mile Drive over Deer Creek?

It is owned by the City or Municipal Highway Agency.