US Bridges

White Oak Rd. over South Fork Walnut Creek

Fair

Jones County, Iowa · 083041608 · Structure no. 000000000206810

Built
1970
55 years old
Condition
Fair
inspected December 2022
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
49
2022 count
Owner
County
County Highway Agency

About this bridge

White Oak Rd. over South Fork Walnut Creek is a concrete continuous slab carrying White Oak Rd. over South Fork Walnut Creek in Jones County, Iowa. It was built in 1970, so it is 55 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 49 vehicles a day, projected to reach 49 by 2043. The structure is 102 ft (31 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesWhite Oak Rd.
CrossesSouth Fork Walnut Creek
Location083041608
RouteCounty Highway 0
CountyJones County
StateIowa
Coordinates41.99991, -91.3097
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
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 rating55.3 US tons
Inventory rating33.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length102 ft (31 m)
Longest span39 ft (11.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2022)
Projected traffic49 by 2043
Trucks0%
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 White Oak Rd. over South Fork Walnut Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is White Oak Rd. over South Fork Walnut 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 December 2022.

How much traffic does White Oak Rd. over South Fork Walnut Creek carry?

About 49 vehicles per day (2022 count).

How long is White Oak Rd. over South Fork Walnut Creek?

The structure is 102 ft (31 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.

Who owns White Oak Rd. over South Fork Walnut Creek?

It is owned by the County Highway Agency.