US Bridges

70th RD over Silver Creek

Good

Hall County, Nebraska · 2.1S 6.7E Cairo · Structure no. C004022715

Built
2022
3 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
435
2021 count
Owner
County
County Highway Agency

About this bridge

70th RD over Silver Creek is a concrete culvert carrying 70th RD over Silver Creek in Hall County, Nebraska. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 435 vehicles a day, roughly 5% of them trucks, projected to reach 650 by 2041. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 31.1 mi (50 km).

Carries70th RD
CrossesSilver Creek
Location2.1S 6.7E Cairo
RouteCounty Highway 227
Coordinates40.96507, -98.47454
Functional classRural Local

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.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating26.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
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 traffic435 (2021)
Projected traffic650 by 2041
Trucks5%
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

OwnerCounty Highway Agency
Maintained byCounty 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 70th RD over Silver Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is 70th RD over Silver Creek 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 70th RD over Silver Creek carry?

About 435 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 70th RD over Silver Creek?

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

Who owns 70th RD over Silver Creek?

It is owned by the County Highway Agency.