US Bridges

FM over Branch Four Mile Creek

Good

Polk County, Iowa · 079230800 · Structure no. 000000000281222

Built
2003
22 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
2,571
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

FM over Branch Four Mile Creek is a concrete continuous culvert carrying FM over Branch Four Mile Creek in Polk County, Iowa. It was built in 2003, so it is 22 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 2,571 vehicles a day, roughly 6% of them trucks, projected to reach 2,571 by 2044. The structure is 46 ft (14 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM
CrossesBranch Four Mile Creek
Location079230800
RouteCity Street 0
StateIowa
Coordinates41.66979, -93.56105
Functional classUrban Minor Arterial

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.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length46 ft (14 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,571 (2022)
Projected traffic2,571 by 2044
Trucks6%
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 FM over Branch Four Mile Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is FM over Branch Four Mile 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 FM over Branch Four Mile Creek carry?

About 2,571 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is FM over Branch Four Mile Creek?

The structure is 46 ft (14 m) long with a longest span of 12 ft (3.7 m).

Who owns FM over Branch Four Mile Creek?

It is owned by the City or Municipal Highway Agency.