US Bridges

N 84th ST over Rock Creek (b 230)

FairPosted for load

Lancaster County, Nebraska · 3E 4N of Davey · Structure no. C005513350

Built
1978
47 years old
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel
Length
84 ft
1 main span
Daily traffic
44
2017 count
Owner
County
County Highway Agency

About this bridge

N 84th ST over Rock Creek (b 230) is a steel truss - thru carrying N 84th ST over Rock Creek (b 230) in Lancaster County, Nebraska. It was built in 1978, so it is 47 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 44 vehicles a day, projected to reach 75 by 2042. The structure is 84 ft (25.6 m) long and 25 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

Location

Open in Google Maps
CarriesN 84th ST
CrossesRock Creek (b 230)
Location3E 4N of Davey
RouteCounty Highway 133
CountyLancaster County
StateNebraska
Coordinates41.0432, -96.6014
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating14.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span80 ft (24.4 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2017)
Projected traffic75 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N 84th ST over Rock Creek (b 230) built?

It was built in 1978, making it 47 years old in 2025.

What condition is N 84th ST over Rock Creek (b 230) 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 2023.

How much traffic does N 84th ST over Rock Creek (b 230) carry?

About 44 vehicles per day (2017 count).

How long is N 84th ST over Rock Creek (b 230)?

The structure is 84 ft (25.6 m) long with a longest span of 80 ft (24.4 m) and a deck 25 ft wide.

Who owns N 84th ST over Rock Creek (b 230)?

It is owned by the County Highway Agency.