US Bridges

Basswood Ave over Roberts Creek

Fair

Clayton County, Iowa · 095061502 · Structure no. 000000000121391

Built
2002
23 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
668
2022 count
Owner
County
County Highway Agency

About this bridge

Basswood Ave over Roberts Creek is a concrete continuous slab carrying Basswood Ave over Roberts Creek in Clayton County, Iowa. It was built in 2002, so it is 23 years old, younger 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 668 vehicles a day, roughly 16% of them trucks, projected to reach 668 by 2044. The structure is 128 ft (39 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesBasswood Ave
CrossesRoberts Creek
Location095061502
RouteCounty Highway 0
CountyClayton County
StateIowa
Coordinates43.04453, -91.54841
Functional classRural Major 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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating64 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span49 ft (14.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic668 (2022)
Projected traffic668 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Basswood Ave over Roberts Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Basswood Ave 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 September 2024.

How much traffic does Basswood Ave over Roberts Creek carry?

About 668 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Basswood Ave over Roberts Creek?

The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns Basswood Ave over Roberts Creek?

It is owned by the County Highway Agency.