US Bridges

Local (lwc) over Prairie Creek

Fair

Benton County, Iowa · 083113001 · Structure no. 000000000071331

Built
1986
39 years old
Condition
Fair
inspected April 2023
Type
Slab
Steel
Length
53 ft
1 main span
Daily traffic
45
2021 count
Owner
County
County Highway Agency

About this bridge

Local (lwc) over Prairie Creek is a steel slab carrying Local (lwc) over Prairie Creek in Benton County, Iowa. It was built in 1986, so it is 39 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 45 vehicles a day, projected to reach 45 by 2043. The structure is 53 ft (16.2 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLocal (lwc)
CrossesPrairie Creek
Location083113001
RouteCounty Highway 0
CountyBenton County
StateIowa
Coordinates41.97835, -92.18015
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionApril 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 rating56.8 US tons
Inventory rating29.9 US tons

Structure

Structure typeSlab
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span50 ft (15.2 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2021)
Projected traffic45 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local (lwc) over Prairie Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Local (lwc) over Prairie 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 Local (lwc) over Prairie Creek carry?

About 45 vehicles per day (2021 count).

How long is Local (lwc) over Prairie Creek?

The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 22 ft wide.

Who owns Local (lwc) over Prairie Creek?

It is owned by the County Highway Agency.