US Bridges

3rd Street over Big Creek

Good

Polk County, Iowa · 080250100 · Structure no. 000000000009616

Built
1985
40 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
41 ft
3 main spans
Daily traffic
4,992
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

3rd Street over Big Creek is a concrete continuous culvert carrying 3rd Street over Big Creek in Polk County, Iowa. It was built in 1985, so it is 40 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 4,992 vehicles a day, roughly 5% of them trucks, projected to reach 4,992 by 2044. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Carries3rd Street
CrossesBig Creek
Location080250100
RouteCity Street 0
StateIowa
Coordinates41.77477, -93.71081
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 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 alignment7: Better than present minimum criteria
Operating rating97.7 US tons
Inventory rating58.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,992 (2022)
Projected traffic4,992 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 3rd Street over Big Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is 3rd Street over Big 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 June 2024.

How much traffic does 3rd Street over Big Creek carry?

About 4,992 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 3rd Street over Big Creek?

The structure is 41 ft (12.5 m) long with a longest span of 13 ft (4 m).

Who owns 3rd Street over Big Creek?

It is owned by the City or Municipal Highway Agency.