US Bridges

NB US81 over Shell Creek Overflow

Good

Platte County, Nebraska · 9NW Columbus · Structure no. S081 12051L

Built
1998
27 years old
Condition
Good
inspected June 2021
Type
Slab
Concrete Continuous
Length
94 ft
3 main spans
Daily traffic
7,875
2018 count
Owner
State
State Highway Agency

About this bridge

NB US81 over Shell Creek Overflow is a concrete continuous slab carrying NB US81 over Shell Creek Overflow in Platte County, Nebraska. It was built in 1998, so it is 27 years old, younger 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.

It carries about 7,875 vehicles a day, roughly 18% of them trucks, projected to reach 11,419 by 2038. The structure is 94 ft (28.7 m) long and 41 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

CarriesNB US81
CrossesShell Creek Overflow
Location9NW Columbus
RouteU.S. Route 81
Coordinates41.5146, -97.4652
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.5 US tons
Inventory rating48.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length94 ft (28.7 m)
Longest span36 ft (11 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,875 (2018)
Projected traffic11,419 by 2038
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 NB US81 over Shell Creek Overflow built?

It was built in 1998, making it 27 years old in 2025.

What condition is NB US81 over Shell Creek Overflow 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 June 2021.

How much traffic does NB US81 over Shell Creek Overflow carry?

About 7,875 vehicles per day (2018 count), of which roughly 18% are trucks.

How long is NB US81 over Shell Creek Overflow?

The structure is 94 ft (28.7 m) long with a longest span of 36 ft (11 m) and a deck 41 ft wide.

Who owns NB US81 over Shell Creek Overflow?

It is owned by the State Highway Agency.