US Bridges

Northgate DR over Trib. to Rapid Creek

Good

Johnson County, Iowa · 080063600 · Structure no. 000000000505085

Built
2003
22 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
66
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Northgate DR over Trib. to Rapid Creek is a concrete continuous culvert carrying Northgate DR over Trib. to Rapid Creek in Johnson 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 66 vehicles a day, projected to reach 66 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNorthgate DR
CrossesTrib. to Rapid Creek
Location080063600
RouteCity Street 0
CountyJohnson County
StateIowa
Coordinates41.68836, -91.48921
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66 (2022)
Projected traffic66 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Northgate DR over Trib. to Rapid Creek built?

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

What condition is Northgate DR over Trib. to Rapid 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 2023.

How much traffic does Northgate DR over Trib. to Rapid Creek carry?

About 66 vehicles per day (2022 count).

How long is Northgate DR over Trib. to Rapid Creek?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns Northgate DR over Trib. to Rapid Creek?

It is owned by the City or Municipal Highway Agency.