US Bridges

Johnson-Iowa RD over Deer Creek

Good

Johnson County, Iowa · 078080704 · Structure no. 000000000203691

Built
2019
6 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
170
2021 count
Owner
County
County Highway Agency

About this bridge

Johnson-Iowa RD over Deer Creek is a concrete continuous slab carrying Johnson-Iowa RD over Deer Creek in Johnson 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 170 vehicles a day, projected to reach 170 by 2043. The structure is 90 ft (27.4 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesJohnson-Iowa RD
CrossesDeer Creek
Location078080704
RouteCounty Highway 0
CountyJohnson County
StateIowa
Coordinates41.57316, -91.82764
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.6 US tons
Inventory rating44.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length90 ft (27.4 m)
Longest span35 ft (10.7 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2021)
Projected traffic170 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

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 Johnson-Iowa RD over Deer Creek built?

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

What condition is Johnson-Iowa RD over Deer 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 April 2023.

How much traffic does Johnson-Iowa RD over Deer Creek carry?

About 170 vehicles per day (2021 count).

How long is Johnson-Iowa RD over Deer Creek?

The structure is 90 ft (27.4 m) long with a longest span of 35 ft (10.7 m) and a deck 33 ft wide.

Who owns Johnson-Iowa RD over Deer Creek?

It is owned by the County Highway Agency.