US Bridges

250th ST over Lost Creek

Fair

Scott County, Iowa · 079E50701 · Structure no. 000000000302921

Built
1985
40 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
150 ft
4 main spans
Daily traffic
80
2022 count
Owner
County
County Highway Agency

About this bridge

250th ST over Lost Creek is a concrete continuous slab carrying 250th ST over Lost Creek in Scott County, Iowa. It was built in 1985, so it is 40 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 80 vehicles a day, projected to reach 80 by 2043. The structure is 150 ft (45.7 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries250th ST
CrossesLost Creek
Location079E50701
RouteCounty Highway 0
CountyScott County
StateIowa
Coordinates41.67027, -90.42706
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length150 ft (45.7 m)
Longest span42 ft (12.8 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2022)
Projected traffic80 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 250th ST over Lost Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is 250th ST over 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 April 2023.

How much traffic does 250th ST over Lost Creek carry?

About 80 vehicles per day (2022 count).

How long is 250th ST over Lost Creek?

The structure is 150 ft (45.7 m) long with a longest span of 42 ft (12.8 m) and a deck 25 ft wide.

Who owns 250th ST over Lost Creek?

It is owned by the County Highway Agency.