US Bridges

Local Road over Walnut Creek

FairPosted for load

Montgomery County, Iowa · 073380401 · Structure no. 000000000256481

Built
1967
58 years old, rebuilt 2007
Condition
Fair
inspected May 2023
Type
Truss - Thru
Steel
Length
146 ft
1 main span
Daily traffic
26
2021 count
Owner
County
County Highway Agency

About this bridge

Local Road over Walnut Creek is a steel truss - thru carrying Local Road over Walnut Creek in Montgomery County, Iowa. It was built in 1967 and reconstructed in 2007, so it is 58 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 26 vehicles a day, projected to reach 26 by 2043. The structure is 146 ft (44.5 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLocal Road
CrossesWalnut Creek
Location073380401
RouteCounty Highway 0
CountyMontgomery County
StateIowa
Coordinates41.15938, -95.23107
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.4 US tons
Inventory rating17.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadUnknown
Structure length146 ft (44.5 m)
Longest span80 ft (24.4 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2021)
Projected traffic26 by 2043
Trucks0%
Lanes on structure2
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 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 Road over Walnut Creek built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2007.

What condition is Local Road over Walnut Creek 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 Local Road over Walnut Creek carry?

About 26 vehicles per day (2021 count).

How long is Local Road over Walnut Creek?

The structure is 146 ft (44.5 m) long with a longest span of 80 ft (24.4 m) and a deck 20 ft wide.

Who owns Local Road over Walnut Creek?

It is owned by the County Highway Agency.