US Bridges

Local over Farmers Ditch

PoorPosted for load

Woodbury County, Iowa · 087460601 · Structure no. 000000000352520

Built
1900
125 years old, rebuilt 1985
Condition
Poor
inspected June 2024
Type
Truss - Thru
Steel
Length
111 ft
1 main span
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Farmers Ditch is a steel truss - thru carrying Local over Farmers Ditch in Woodbury County, Iowa. It was built in 1900 and reconstructed in 1985, 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 3 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 30 vehicles a day, roughly 37% of them trucks, projected to reach 30 by 2044. The structure is 111 ft (33.8 m) long and 19 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLocal
CrossesFarmers Ditch
Location087460601
RouteCounty Highway 0
StateIowa
Coordinates42.38769, -96.24389
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating11.2 US tons
Inventory rating5.1 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadUnknown
Structure length111 ft (33.8 m)
Longest span70 ft (21.3 m)
Deck width19 ft (5.8 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2044
Trucks37%
Lanes on structure2
Traffic directionTwo-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 Local over Farmers Ditch built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1985.

What condition is Local over Farmers Ditch 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 June 2024.

How much traffic does Local over Farmers Ditch carry?

About 30 vehicles per day (2022 count), of which roughly 37% are trucks.

How long is Local over Farmers Ditch?

The structure is 111 ft (33.8 m) long with a longest span of 70 ft (21.3 m) and a deck 19 ft wide.

Who owns Local over Farmers Ditch?

It is owned by the County Highway Agency.