US Bridges

357 Avenue over Walnut Creek

PoorClosed to traffic

Fremont County, Iowa · 069411204 · Structure no. 000000000160130

Built
1900
125 years old
Condition
Poor
inspected April 2023
Type
Truss - Thru
Steel
Length
136 ft
1 main span
Daily traffic
21
2021 count
Owner
County
County Highway Agency

About this bridge

357 Avenue over Walnut Creek is a steel truss - thru carrying 357 Avenue over Walnut Creek in Fremont County, Iowa. It was built in 1900, so it is 125 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 0 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 21 vehicles a day, projected to reach 21 by 2043. The structure is 136 ft (41.5 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries357 Avenue
CrossesWalnut Creek
Location069411204
RouteCounty Highway 0
CountyFremont County
StateIowa
Coordinates40.79543, -95.50425
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck0 FailedOut of service and beyond corrective action.
Superstructure0 FailedOut of service and beyond corrective action.
Substructure0 FailedOut of service and beyond corrective action.
Channel and channel protection0 FailedOut of service and beyond corrective action.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment0: Immediate repair necessary to put back in service
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length136 ft (41.5 m)
Longest span133 ft (40.5 m)
Deck width16 ft (4.8 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic21 (2021)
Projected traffic21 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 357 Avenue over Walnut Creek built?

It was built in 1900, making it 125 years old in 2025.

What condition is 357 Avenue over Walnut Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does 357 Avenue over Walnut Creek carry?

About 21 vehicles per day (2021 count).

How long is 357 Avenue over Walnut Creek?

The structure is 136 ft (41.5 m) long with a longest span of 133 ft (40.5 m) and a deck 16 ft wide.

Who owns 357 Avenue over Walnut Creek?

It is owned by the County Highway Agency.