US Bridges

Local RD over M Nodaway River

PoorPosted for load

Montgomery County, Iowa · 071361405 · Structure no. 000000000254200

Built
1952
73 years old
Condition
Poor
inspected May 2024
Type
Truss - Thru
Steel
Length
142 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

Local RD over M Nodaway River is a steel truss - thru carrying Local RD over M Nodaway River in Montgomery County, Iowa. It was built in 1952, so it is 73 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 4 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: posted for load restriction.

It carries about 100 vehicles a day, projected to reach 100 by 2044. The structure is 142 ft (43.3 m) long and 16 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLocal RD
CrossesM Nodaway River
Location071361405
RouteCounty Highway 0
StateIowa
Coordinates40.955, -94.96148
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.5 US tons
Inventory rating20.2 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length142 ft (43.3 m)
Longest span140 ft (42.7 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic100 (2022)
Projected traffic100 by 2044
Trucks0%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local RD over M Nodaway River built?

It was built in 1952, making it 73 years old in 2025.

What condition is Local RD over M 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 May 2024.

How much traffic does Local RD over M Nodaway River carry?

About 100 vehicles per day (2022 count).

How long is Local RD over M Nodaway River?

The structure is 142 ft (43.3 m) long with a longest span of 140 ft (42.7 m) and a deck 16 ft wide.

Who owns Local RD over M Nodaway River?

It is owned by the County Highway Agency.