US Bridges

N97 over Middle Loup River

Good

Hooker County, Nebraska · 2N Mullen · Structure no. S097 06894

Built
1976
49 years old
Condition
Good
inspected December 2021
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
285
2018 count
Owner
State
State Highway Agency

About this bridge

N97 over Middle Loup River is a concrete culvert carrying N97 over Middle Loup River in Hooker County, Nebraska. It was built in 1976, so it is 49 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.

It carries about 285 vehicles a day, roughly 9% of them trucks, projected to reach 399 by 2038. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 248.5 mi (400 km).

CarriesN97
CrossesMiddle Loup River
Location2N Mullen
RouteState Highway 97
Coordinates42.0686, -101.04
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal 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 spans3
Design loadUnknown
Structure length32 ft (9.8 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 traffic285 (2018)
Projected traffic399 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed248.5 mi (400 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 N97 over Middle Loup River built?

It was built in 1976, making it 49 years old in 2025.

What condition is N97 over Middle Loup River 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 December 2021.

How much traffic does N97 over Middle Loup River carry?

About 285 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is N97 over Middle Loup River?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns N97 over Middle Loup River?

It is owned by the State Highway Agency.