US Bridges

Local 330th ST over Walton Creek

Fair

Buchanan County, Iowa · 087073501 · Structure no. 000000000081021

Built
2006
19 years old
Condition
Fair
inspected December 2024
Type
Other
Steel
Length
69 ft
1 main span
Daily traffic
41
2022 count
Owner
County
County Highway Agency

About this bridge

Local 330th ST over Walton Creek is a steel other carrying Local 330th ST over Walton Creek in Buchanan County, Iowa. It was built in 2006, so it is 19 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 41 vehicles a day, projected to reach 41 by 2043. The structure is 69 ft (21 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLocal 330th ST
CrossesWalton Creek
Location087073501
RouteCounty Highway 0
StateIowa
Coordinates42.31101, -91.61942
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.4 US tons
Inventory rating20.9 US tons

Structure

Structure typeOther
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length69 ft (21 m)
Longest span69 ft (21 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2022)
Projected traffic41 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local 330th ST over Walton Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Local 330th ST over Walton 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 December 2024.

How much traffic does Local 330th ST over Walton Creek carry?

About 41 vehicles per day (2022 count).

How long is Local 330th ST over Walton Creek?

The structure is 69 ft (21 m) long with a longest span of 69 ft (21 m) and a deck 27 ft wide.

Who owns Local 330th ST over Walton Creek?

It is owned by the County Highway Agency.