US Bridges

Local 280 ST over Robinson Creek

Fair

Delaware County, Iowa · 087060601 · Structure no. 000000000140081

Built
1981
44 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
62 ft
2 main spans
Daily traffic
33
2022 count
Owner
County
County Highway Agency

About this bridge

Local 280 ST over Robinson Creek is a prestressed concrete tee beam carrying Local 280 ST over Robinson Creek in Delaware County, Iowa. It was built in 1981, so it is 44 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 33 vehicles a day, projected to reach 33 by 2044. The structure is 62 ft (18.9 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLocal 280 ST
CrossesRobinson Creek
Location087060601
RouteCounty Highway 0
CountyDelaware County
StateIowa
Coordinates42.38399, -91.58459
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadH 20
Structure length62 ft (18.9 m)
Longest span28 ft (8.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33 (2022)
Projected traffic33 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Local 280 ST over Robinson Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Local 280 ST over Robinson 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 February 2024.

How much traffic does Local 280 ST over Robinson Creek carry?

About 33 vehicles per day (2022 count).

How long is Local 280 ST over Robinson Creek?

The structure is 62 ft (18.9 m) long with a longest span of 28 ft (8.5 m) and a deck 24 ft wide.

Who owns Local 280 ST over Robinson Creek?

It is owned by the County Highway Agency.