US Bridges

Mulberry Ave over East Nodaway River

PoorClosed to traffic

Adams County, Iowa · 072333004 · Structure no. 000000000059900

Built
1900
125 years old
Condition
Poor
inspected December 2020
Type
Truss - Thru
Steel
Length
80 ft
1 main span
Daily traffic
5
2022 count
Owner
County
County Highway Agency

About this bridge

Mulberry Ave over East Nodaway River is a steel truss - thru carrying Mulberry Ave over East Nodaway River in Adams 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 5 vehicles a day, projected to reach 5 by 2043. The structure is 80 ft (24.4 m) long and 14 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMulberry Ave
CrossesEast Nodaway River
Location072333004
RouteCounty Highway 0
StateIowa
Coordinates41.01035, -94.68937
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 protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionDecember 2020
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation0: Immediate repair necessary to put back in service
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 rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+1 approach)
Design loadUnknown
Structure length80 ft (24.4 m)
Longest span62 ft (18.9 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)
Projected traffic5 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Mulberry Ave over East Nodaway River built?

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

What condition is Mulberry Ave over East Nodaway River 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 December 2020.

How much traffic does Mulberry Ave over East Nodaway River carry?

About 5 vehicles per day (2022 count).

How long is Mulberry Ave over East Nodaway River?

The structure is 80 ft (24.4 m) long with a longest span of 62 ft (18.9 m) and a deck 14 ft wide.

Who owns Mulberry Ave over East Nodaway River?

It is owned by the County Highway Agency.