US Bridges

N66 over Stream

Good

Polk County, Nebraska · 8E Polk · Structure no. S066 01944

Built
1949
76 years old, rebuilt 2000
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
885
2018 count
Owner
State
State Highway Agency

About this bridge

N66 over Stream is a concrete culvert carrying N66 over Stream in Polk County, Nebraska. It was built in 1949 and reconstructed in 2000, so it is 76 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 885 vehicles a day, roughly 16% of them trucks, projected to reach 1,151 by 2038. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN66
CrossesStream
Location8E Polk
RouteState Highway 66
Coordinates41.0758, -97.6272
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 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 traffic885 (2018)
Projected traffic1,151 by 2038
Trucks16%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N66 over Stream built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2000.

What condition is N66 over Stream 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 2024.

How much traffic does N66 over Stream carry?

About 885 vehicles per day (2018 count), of which roughly 16% are trucks.

How long is N66 over Stream?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns N66 over Stream?

It is owned by the State Highway Agency.