US Bridges

N18 over East Muddy Creek

Good

Frontier County, Nebraska · 21E Stockville · Structure no. S018 03092

Built
2003
22 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
125
2018 count
Owner
State
State Highway Agency

About this bridge

N18 over East Muddy Creek is a concrete culvert carrying N18 over East Muddy Creek in Frontier County, Nebraska. It was built in 2003, so it is 22 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 125 vehicles a day, roughly 20% of them trucks, projected to reach 163 by 2038. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 80.8 mi (130 km).

CarriesN18
CrossesEast Muddy Creek
Location21E Stockville
RouteState Highway 18
Coordinates40.4964, -100.0446
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 protection9 ExcellentNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.4 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2018)
Projected traffic163 by 2038
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed80.8 mi (130 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N18 over East Muddy Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is N18 over East Muddy 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 East Muddy Creek carry?

About 125 vehicles per day (2018 count), of which roughly 20% are trucks.

How long is N18 over East Muddy Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns N18 over East Muddy Creek?

It is owned by the State Highway Agency.