US Bridges

Sheridan Ave over Ralston Creek S Branch

Fair

Johnson County, Iowa · 079061400 · Structure no. 000000000006290

Built
1957
68 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
22 ft
1 main span
Daily traffic
2,105
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sheridan Ave over Ralston Creek S Branch is a concrete stringer/multi-beam or girder carrying Sheridan Ave over Ralston Creek S Branch in Johnson County, Iowa. It was built in 1957, so it is 68 years old, older 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 5 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 2,105 vehicles a day, projected to reach 2,105 by 2043. The structure is 22 ft (6.7 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSheridan Ave
CrossesRalston Creek S Branch
Location079061400
RouteCity Street 0
CountyJohnson County
StateIowa
Coordinates41.65223, -91.51493
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating58.9 US tons
Inventory rating35.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width41 ft (12.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,105 (2022)
Projected traffic2,105 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$28,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Sheridan Ave over Ralston Creek S Branch built?

It was built in 1957, making it 68 years old in 2025.

What condition is Sheridan Ave over Ralston Creek S Branch 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 Sheridan Ave over Ralston Creek S Branch carry?

About 2,105 vehicles per day (2022 count).

How long is Sheridan Ave over Ralston Creek S Branch?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 41 ft wide.

Who owns Sheridan Ave over Ralston Creek S Branch?

It is owned by the City or Municipal Highway Agency.