US Bridges

EB US 34 over West Nodaway River

Fair

Montgomery County, Iowa · 0.3 Mi. W of Jct. US 71 · Structure no. 000000000037570

Built
1964
61 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
274 ft
3 main spans
Daily traffic
1,325
2022 count
Owner
State
State Highway Agency

About this bridge

EB US 34 over West Nodaway River is a steel continuous stringer/multi-beam or girder carrying EB US 34 over West Nodaway River in Montgomery County, Iowa. It was built in 1964, so it is 61 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 1,325 vehicles a day, roughly 20% of them trucks, projected to reach 1,325 by 2042. The structure is 274 ft (83.5 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesEB US 34
CrossesWest Nodaway River
Location0.3 Mi. W of Jct. US 71
RouteU.S. Route 34
CountyMontgomery County
StateIowa
Coordinates40.97963, -94.9911
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length274 ft (83.5 m)
Longest span105 ft (32 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,325 (2022)
Projected traffic1,325 by 2042
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 EB US 34 over West Nodaway River built?

It was built in 1964, making it 61 years old in 2025.

What condition is EB US 34 over West Nodaway 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 June 2023.

How much traffic does EB US 34 over West Nodaway River carry?

About 1,325 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is EB US 34 over West Nodaway River?

The structure is 274 ft (83.5 m) long with a longest span of 105 ft (32 m) and a deck 36 ft wide.

Who owns EB US 34 over West Nodaway River?

It is owned by the State Highway Agency.