US Bridges

Farmersburg RD over Roberts Creek

FairPosted for load

Clayton County, Iowa · 094051403 · Structure no. 000000000120510

Built
1933
92 years old
Condition
Fair
inspected October 2022
Type
Truss - Thru
Steel
Length
90 ft
1 main span
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

Farmersburg RD over Roberts Creek is a steel truss - thru carrying Farmersburg RD over Roberts Creek in Clayton County, Iowa. It was built in 1933, so it is 92 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. Its operating status is: posted for other load-capacity restriction.

It carries about 25 vehicles a day, projected to reach 25 by 2043. The structure is 90 ft (27.4 m) long and 19 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFarmersburg RD
CrossesRoberts Creek
Location094051403
RouteCounty Highway 0
CountyClayton County
StateIowa
Coordinates42.95144, -91.4095
Functional classRural Minor Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating39.7 US tons
Inventory rating25.1 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length90 ft (27.4 m)
Longest span90 ft (27.4 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic25 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Farmersburg RD over Roberts Creek built?

It was built in 1933, making it 92 years old in 2025.

What condition is Farmersburg RD over Roberts 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 October 2022.

How much traffic does Farmersburg RD over Roberts Creek carry?

About 25 vehicles per day (2022 count).

How long is Farmersburg RD over Roberts Creek?

The structure is 90 ft (27.4 m) long with a longest span of 90 ft (27.4 m) and a deck 19 ft wide.

Who owns Farmersburg RD over Roberts Creek?

It is owned by the County Highway Agency.