US Bridges

863rd Road over Yankton Slough

GoodPosted for load

Pierce County, Nebraska · 3S 2E of Mclean · Structure no. C007011615

Built
1935
90 years old, rebuilt 2019
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
2 main spans
Daily traffic
40
2003 count
Owner
County
County Highway Agency

About this bridge

863rd Road over Yankton Slough is a steel stringer/multi-beam or girder carrying 863rd Road over Yankton Slough in Pierce County, Nebraska. It was built in 1935 and reconstructed in 2019, so it is 90 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, projected to reach 68 by 2033. The structure is 56 ft (17.1 m) long and 16 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
Carries863rd Road
CrossesYankton Slough
Location3S 2E of Mclean
RouteCounty Highway 116
CountyPierce County
StateNebraska
Coordinates42.337, -97.4286
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.8 US tons
Inventory rating17.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length56 ft (17.1 m)
Longest span27 ft (8.2 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2003)
Projected traffic68 by 2033
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 863rd Road over Yankton Slough built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2019.

What condition is 863rd Road over Yankton Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does 863rd Road over Yankton Slough carry?

About 40 vehicles per day (2003 count).

How long is 863rd Road over Yankton Slough?

The structure is 56 ft (17.1 m) long with a longest span of 27 ft (8.2 m) and a deck 16 ft wide.

Who owns 863rd Road over Yankton Slough?

It is owned by the County Highway Agency.