US Bridges

County Line Road over Creek

Good

Warren County, Iowa · 078243200 · Structure no. 000000000505670

Built
2019
6 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
340
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

County Line Road over Creek is a concrete culvert carrying County Line Road over Creek in Warren County, Iowa. It was built in 2019, so it is 6 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 340 vehicles a day, projected to reach 340 by 2043. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Line Road
CrossesCreek
Location078243200
RouteCity Street 0
CountyWarren County
StateIowa
Coordinates41.51208, -93.63532
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.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length30 ft (9.1 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic340 (2022)
Projected traffic340 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 County Line Road over Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is County Line Road over 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 July 2023.

How much traffic does County Line Road over Creek carry?

About 340 vehicles per day (2022 count).

How long is County Line Road over Creek?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.3 m).

Who owns County Line Road over Creek?

It is owned by the City or Municipal Highway Agency.