US Bridges

Co. Road 490th St. over Plum Creek

FairPosted for load

Nance County, Nebraska · 9.7W of Genoa · Structure no. C006331410

Built
1935
90 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
59 ft
3 main spans
Daily traffic
10
2003 count
Owner
County
County Highway Agency

About this bridge

Co. Road 490th St. over Plum Creek is a wood or timber stringer/multi-beam or girder carrying Co. Road 490th St. over Plum Creek in Nance County, Nebraska. It was built in 1935, so it is 90 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, projected to reach 17 by 2041. The structure is 59 ft (18 m) long and 20 ft wide. If it were closed, the detour would be 68.4 mi (110 km).

Location

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CarriesCo. Road 490th St.
CrossesPlum Creek
Location9.7W of Genoa
RouteCounty Highway 314
CountyNance County
StateNebraska
Coordinates41.438, -97.9313
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.7 US tons
Inventory rating11 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length59 ft (18 m)
Longest span38 ft (11.6 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2003)
Projected traffic17 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed68.4 mi (110 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 Co. Road 490th St. over Plum Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is Co. Road 490th St. over Plum 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 November 2024.

How much traffic does Co. Road 490th St. over Plum Creek carry?

About 10 vehicles per day (2003 count).

How long is Co. Road 490th St. over Plum Creek?

The structure is 59 ft (18 m) long with a longest span of 38 ft (11.6 m) and a deck 20 ft wide.

Who owns Co. Road 490th St. over Plum Creek?

It is owned by the County Highway Agency.