US Bridges

US34/US75 over Rock Creek

Fair

Cass County, Nebraska · 6N Union Corner · Structure no. S034 37299

Built
1959
66 years old, rebuilt 1983
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
4,815
2018 count
Owner
State
State Highway Agency

About this bridge

US34/US75 over Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying US34/US75 over Rock Creek in Cass County, Nebraska. It was built in 1959 and reconstructed in 1983, so it is 66 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.

It carries about 4,815 vehicles a day, roughly 10% of them trucks, projected to reach 7,223 by 2038. The structure is 66 ft (20.1 m) long and 43 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesUS34/US75
CrossesRock Creek
Location6N Union Corner
RouteU.S. Route 34
CountyCass County
StateNebraska
Coordinates40.9084, -95.9114
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating98.1 US tons
Inventory rating57.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length66 ft (20.1 m)
Longest span65 ft (19.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,815 (2018)
Projected traffic7,223 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemYes

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 US34/US75 over Rock Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1983.

What condition is US34/US75 over Rock 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 March 2024.

How much traffic does US34/US75 over Rock Creek carry?

About 4,815 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is US34/US75 over Rock Creek?

The structure is 66 ft (20.1 m) long with a longest span of 65 ft (19.8 m) and a deck 43 ft wide.

Who owns US34/US75 over Rock Creek?

It is owned by the State Highway Agency.