US Bridges

SW 360th ST over N Br Old Mans CR

Good

Johnson County, Iowa · 079080903 · Structure no. 000000000204350

Built
1998
27 years old
Condition
Good
inspected May 2021
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

SW 360th ST over N Br Old Mans CR is a concrete culvert carrying SW 360th ST over N Br Old Mans CR in Johnson County, Iowa. It was built in 1998, so it is 27 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 35 vehicles a day, projected to reach 35 by 2043. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSW 360th ST
CrossesN Br Old Mans CR
Location079080903
RouteCounty Highway 0
StateIowa
Coordinates41.67279, -91.77895
Functional classRural 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.
Culvert7 GoodSome minor problems.
Last inspectionMay 2021
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 alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2022)
Projected traffic35 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 360th ST over N Br Old Mans CR built?

It was built in 1998, making it 27 years old in 2025.

What condition is SW 360th ST over N Br Old Mans CR 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 2021.

How much traffic does SW 360th ST over N Br Old Mans CR carry?

About 35 vehicles per day (2022 count).

How long is SW 360th ST over N Br Old Mans CR?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns SW 360th ST over N Br Old Mans CR?

It is owned by the County Highway Agency.