US Bridges

N66 over Silver Creek Tributary

Good

Saunders County, Nebraska · 3SE Ithaca · Structure no. S066 08270

Built
1998
27 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
113 ft
3 main spans
Daily traffic
1,360
2018 count
Owner
State
State Highway Agency

About this bridge

N66 over Silver Creek Tributary is a steel continuous stringer/multi-beam or girder carrying N66 over Silver Creek Tributary in Saunders County, Nebraska. It was built in 1998, so it is 27 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 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 1,360 vehicles a day, roughly 15% of them trucks, projected to reach 1,768 by 2038. The structure is 113 ft (34.4 m) long and 38 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN66
CrossesSilver Creek Tributary
Location3SE Ithaca
RouteState Highway 66
Coordinates41.1472, -96.5064
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating36.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length113 ft (34.4 m)
Longest span43 ft (13.1 m)
Deck width38 ft (11.5 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,360 (2018)
Projected traffic1,768 by 2038
Trucks15%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N66 over Silver Creek Tributary built?

It was built in 1998, making it 27 years old in 2025.

What condition is N66 over Silver Creek Tributary 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 June 2024.

How much traffic does N66 over Silver Creek Tributary carry?

About 1,360 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is N66 over Silver Creek Tributary?

The structure is 113 ft (34.4 m) long with a longest span of 43 ft (13.1 m) and a deck 38 ft wide.

Who owns N66 over Silver Creek Tributary?

It is owned by the State Highway Agency.