US Bridges

230th Ave over Br Lost Creek

Fair

Scott County, Iowa · 079E41204 · Structure no. 000000000363575

Built
1992
33 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
370
2022 count
Owner
County
County Highway Agency

About this bridge

230th Ave over Br Lost Creek is a prestressed concrete tee beam carrying 230th Ave over Br Lost Creek in Scott County, Iowa. It was built in 1992, so it is 33 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 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 370 vehicles a day, roughly 18% of them trucks, projected to reach 370 by 2043. The structure is 36 ft (11 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries230th Ave
CrossesBr Lost Creek
Location079E41204
RouteCounty Highway 0
CountyScott County
StateIowa
Coordinates41.65965, -90.45182
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65.8 US tons
Inventory rating39.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span35 ft (10.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic370 (2022)
Projected traffic370 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 230th Ave over Br Lost Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is 230th Ave over Br Lost 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 May 2023.

How much traffic does 230th Ave over Br Lost Creek carry?

About 370 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is 230th Ave over Br Lost Creek?

The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 28 ft wide.

Who owns 230th Ave over Br Lost Creek?

It is owned by the County Highway Agency.