US Bridges

Road 728 over Plum Creek Trib

Fair

Frontier County, Nebraska · N Edge of Eustis · Structure no. C003250610

Built
1934
91 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
48 ft
3 main spans
Daily traffic
100
2003 count
Owner
County
County Highway Agency

About this bridge

Road 728 over Plum Creek Trib is a concrete slab carrying Road 728 over Plum Creek Trib in Frontier County, Nebraska. It was built in 1934, so it is 91 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 170 by 2033. The structure is 48 ft (14.6 m) long and 26 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

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CarriesRoad 728
CrossesPlum Creek Trib
LocationN Edge of Eustis
RouteCounty Highway 506
CountyFrontier County
StateNebraska
Coordinates40.671, -100.033
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span16 ft (4.9 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2003)
Projected traffic170 by 2033
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 Road 728 over Plum Creek Trib built?

It was built in 1934, making it 91 years old in 2025.

What condition is Road 728 over Plum Creek Trib 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 September 2023.

How much traffic does Road 728 over Plum Creek Trib carry?

About 100 vehicles per day (2003 count), of which roughly 10% are trucks.

How long is Road 728 over Plum Creek Trib?

The structure is 48 ft (14.6 m) long with a longest span of 16 ft (4.9 m) and a deck 26 ft wide.

Who owns Road 728 over Plum Creek Trib?

It is owned by the County Highway Agency.