US Bridges

N18 over Deer Creek

Good

Frontier County, Nebraska · 8E Stockville · Structure no. S018 01779

Built
1979
46 years old
Condition
Good
inspected April 2024
Type
Culvert
Steel
Length
41 ft
1 main span
Daily traffic
250
2018 count
Owner
State
State Highway Agency

About this bridge

N18 over Deer Creek is a steel culvert carrying N18 over Deer Creek in Frontier County, Nebraska. It was built in 1979, so it is 46 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 250 vehicles a day, roughly 14% of them trucks, projected to reach 325 by 2038. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN18
CrossesDeer Creek
Location8E Stockville
RouteState Highway 18
Coordinates40.5411, -100.2424
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating13.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2018)
Projected traffic325 by 2038
Trucks14%
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 N18 over Deer Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is N18 over Deer Creek 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 April 2024.

How much traffic does N18 over Deer Creek carry?

About 250 vehicles per day (2018 count), of which roughly 14% are trucks.

How long is N18 over Deer Creek?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m).

Who owns N18 over Deer Creek?

It is owned by the State Highway Agency.