US Bridges

N66 over Silver Creek

Fair

Saunders County, Nebraska · 2SE Ithaca · Structure no. S066 08217

Built
1998
27 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
134 ft
3 main spans
Daily traffic
1,360
2018 count
Owner
State
State Highway Agency

About this bridge

N66 over Silver Creek is a concrete continuous slab carrying N66 over Silver Creek 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 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.

It carries about 1,360 vehicles a day, roughly 15% of them trucks, projected to reach 1,768 by 2038. The structure is 134 ft (40.8 m) long and 38 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN66
CrossesSilver Creek
Location2SE Ithaca
RouteState Highway 66
Coordinates41.1473, -96.5167
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating108 US tons
Inventory rating63.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length134 ft (40.8 m)
Longest span52 ft (15.8 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N66 over Silver Creek built?

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

What condition is N66 over Silver 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 June 2024.

How much traffic does N66 over Silver Creek carry?

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

How long is N66 over Silver Creek?

The structure is 134 ft (40.8 m) long with a longest span of 52 ft (15.8 m) and a deck 38 ft wide.

Who owns N66 over Silver Creek?

It is owned by the State Highway Agency.