US Bridges

Local over Dd 61

Fair

Palo Alto County, Iowa · 094310101 · Structure no. 000000000268631

Built
1978
47 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
82
2021 count
Owner
County
County Highway Agency

About this bridge

Local over Dd 61 is a concrete continuous slab carrying Local over Dd 61 in Palo Alto County, Iowa. It was built in 1978, so it is 47 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.

It carries about 82 vehicles a day, projected to reach 82 by 2043. The structure is 78 ft (23.8 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLocal
CrossesDd 61
Location094310101
RouteCounty Highway 0
StateIowa
Coordinates42.995, -94.45749
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating29.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length78 ft (23.8 m)
Longest span29 ft (8.8 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2021)
Projected traffic82 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Dd 61 built?

It was built in 1978, making it 47 years old in 2025.

What condition is Local over Dd 61 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 April 2023.

How much traffic does Local over Dd 61 carry?

About 82 vehicles per day (2021 count).

How long is Local over Dd 61?

The structure is 78 ft (23.8 m) long with a longest span of 29 ft (8.8 m) and a deck 32 ft wide.

Who owns Local over Dd 61?

It is owned by the County Highway Agency.