US Bridges

County Highway over Rock Creek

PoorPosted for load

Otoe County, Nebraska · 1S 6.7E Lorton · Structure no. C006623075

Built
1910
115 years old
Condition
Poor
inspected July 2023
Type
Truss - Thru
Steel
Length
60 ft
1 main span
Daily traffic
5
2003 count
Owner
County
County Highway Agency

About this bridge

County Highway over Rock Creek is a steel truss - thru carrying County Highway over Rock Creek in Otoe County, Nebraska. It was built in 1910, so it is 115 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, projected to reach 8 by 2033. The structure is 60 ft (18.3 m) long and 15 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

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CarriesCounty Highway
CrossesRock Creek
Location1S 6.7E Lorton
RouteCounty Highway 230
CountyOtoe County
StateNebraska
Coordinates40.5809, -95.8926
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating14.3 US tons
Inventory rating7.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width15 ft (4.7 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2003)
Projected traffic8 by 2033
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Rock Creek built?

It was built in 1910, making it 115 years old in 2025.

What condition is County Highway over Rock Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does County Highway over Rock Creek carry?

About 5 vehicles per day (2003 count).

How long is County Highway over Rock Creek?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 15 ft wide.

Who owns County Highway over Rock Creek?

It is owned by the County Highway Agency.