US Bridges

Brookside DR over So Br Ralston Creek

Fair

Johnson County, Iowa · 079061300 · Structure no. 000000000006571

Built
1997
28 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
377
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Brookside DR over So Br Ralston Creek is a concrete slab carrying Brookside DR over So Br Ralston Creek in Johnson County, Iowa. It was built in 1997, so it is 28 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 377 vehicles a day, projected to reach 377 by 2043. The structure is 27 ft (8.2 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBrookside DR
CrossesSo Br Ralston Creek
Location079061300
RouteCity Street 0
CountyJohnson County
StateIowa
Coordinates41.65343, -91.48838
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating75.3 US tons
Inventory rating45.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span26 ft (7.9 m)
Deck width45 ft (13.7 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic377 (2022)
Projected traffic377 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Brookside DR over So Br Ralston Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Brookside DR over So Br Ralston Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Brookside DR over So Br Ralston Creek carry?

About 377 vehicles per day (2022 count).

How long is Brookside DR over So Br Ralston Creek?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 45 ft wide.

Who owns Brookside DR over So Br Ralston Creek?

It is owned by the City or Municipal Highway Agency.