US Bridges

Coll 7718 over N. F. Elkhorn River Trib

Fair

Knox County, Nebraska · 1.7W 1N of Wausa · Structure no. C005425245

Built
2008
17 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

Coll 7718 over N. F. Elkhorn River Trib is a steel stringer/multi-beam or girder carrying Coll 7718 over N. F. Elkhorn River Trib in Knox County, Nebraska. It was built in 2008, so it is 17 years old, younger 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 60 vehicles a day, roughly 5% of them trucks, projected to reach 70 by 2042. The structure is 26 ft (7.9 m) long and 29 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesColl 7718
CrossesN. F. Elkhorn River Trib
Location1.7W 1N of Wausa
RouteCounty Highway 7718
CountyKnox County
StateNebraska
Coordinates42.5108, -97.5756
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating84.9 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic70 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Coll 7718 over N. F. Elkhorn River Trib built?

It was built in 2008, making it 17 years old in 2025.

What condition is Coll 7718 over N. F. Elkhorn River Trib 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 October 2024.

How much traffic does Coll 7718 over N. F. Elkhorn River Trib carry?

About 60 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Coll 7718 over N. F. Elkhorn River Trib?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 29 ft wide.

Who owns Coll 7718 over N. F. Elkhorn River Trib?

It is owned by the County Highway Agency.