US Bridges

330 Avenue over E Nishnabotna River

Fair

Fremont County, Iowa · 068412102 · Structure no. 000000000159321

Built
1975
50 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
352 ft
4 main spans
Daily traffic
180
2022 count
Owner
County
County Highway Agency

About this bridge

330 Avenue over E Nishnabotna River is a steel continuous stringer/multi-beam or girder carrying 330 Avenue over E Nishnabotna River in Fremont County, Iowa. It was built in 1975, so it is 50 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 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 180 vehicles a day, roughly 18% of them trucks, projected to reach 180 by 2043. The structure is 352 ft (107.3 m) long and 32 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
Carries330 Avenue
CrossesE Nishnabotna River
Location068412102
RouteCounty Highway 0
CountyFremont County
StateIowa
Coordinates40.69413, -95.56246
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.7 US tons
Inventory rating33.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length352 ft (107.3 m)
Longest span98 ft (29.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2022)
Projected traffic180 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 330 Avenue over E Nishnabotna River built?

It was built in 1975, making it 50 years old in 2025.

What condition is 330 Avenue over E Nishnabotna River 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 330 Avenue over E Nishnabotna River carry?

About 180 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is 330 Avenue over E Nishnabotna River?

The structure is 352 ft (107.3 m) long with a longest span of 98 ft (29.9 m) and a deck 32 ft wide.

Who owns 330 Avenue over E Nishnabotna River?

It is owned by the County Highway Agency.