US Bridges

330th ST over Lime Creek

Fair

Buchanan County, Iowa · 087102711 · Structure no. 000000000016110

Built
1951
74 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
92 ft
1 main span
Daily traffic
992
2022 count
Owner
County
County Highway Agency

About this bridge

330th ST over Lime Creek is a steel stringer/multi-beam or girder carrying 330th ST over Lime Creek in Buchanan County, Iowa. It was built in 1951, so it is 74 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 992 vehicles a day, roughly 20% of them trucks, projected to reach 992 by 2042. The structure is 92 ft (28 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries330th ST
CrossesLime Creek
Location087102711
RouteCounty Highway 0
CountyBuchanan County
StateIowa
Coordinates42.31378, -91.99155
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2022
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.3 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length92 ft (28 m)
Longest span90 ft (27.4 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic992 (2022)
Projected traffic992 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 330th ST over Lime Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is 330th ST over Lime 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 November 2022.

How much traffic does 330th ST over Lime Creek carry?

About 992 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is 330th ST over Lime Creek?

The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 32 ft wide.

Who owns 330th ST over Lime Creek?

It is owned by the County Highway Agency.