US Bridges

N15 over Rock Creek

Fair

Stanton County, Nebraska · 7S Pilger · Structure no. S015 13996

Built
1959
66 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
52 ft
3 main spans
Daily traffic
1,520
2018 count
Owner
State
State Highway Agency

About this bridge

N15 over Rock Creek is a concrete continuous slab carrying N15 over Rock Creek in Stanton County, Nebraska. It was built in 1959, so it is 66 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 1,520 vehicles a day, roughly 25% of them trucks, projected to reach 2,052 by 2038. The structure is 52 ft (15.8 m) long and 33 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesN15
CrossesRock Creek
Location7S Pilger
RouteState Highway 15
CountyStanton County
StateNebraska
Coordinates41.9077, -97.0585
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length52 ft (15.8 m)
Longest span21 ft (6.4 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,520 (2018)
Projected traffic2,052 by 2038
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemNo

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 N15 over Rock Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is N15 over Rock 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 June 2023.

How much traffic does N15 over Rock Creek carry?

About 1,520 vehicles per day (2018 count), of which roughly 25% are trucks.

How long is N15 over Rock Creek?

The structure is 52 ft (15.8 m) long with a longest span of 21 ft (6.4 m) and a deck 33 ft wide.

Who owns N15 over Rock Creek?

It is owned by the State Highway Agency.