US Bridges

IRR/S54D Santee SP over Lost Creek

PoorClosed to traffic

Knox County, Nebraska · 6E 1N Niobrara · Structure no. SS54D00157

Built
1970
55 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
103 ft
1 main span
Daily traffic
740
2018 count
Owner
State
State Highway Agency

About this bridge

IRR/S54D Santee SP over Lost Creek is a steel stringer/multi-beam or girder carrying IRR/S54D Santee SP over Lost Creek in Knox County, Nebraska. It was built in 1970, so it is 55 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 3 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: closed to all traffic.

It carries about 740 vehicles a day, roughly 8% of them trucks, projected to reach 999 by 2038. The structure is 103 ft (31.4 m) long and 31 ft wide. If it were closed, the detour would be 118.1 mi (190 km).

Location

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CarriesIRR/S54D Santee SP
CrossesLost Creek
Location6E 1N Niobrara
RouteState Highway 0S54D
CountyKnox County
StateNebraska
Coordinates42.7664, -97.9203
Functional classRural Major Collector

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length103 ft (31.4 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic740 (2018)
Projected traffic999 by 2038
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed118.1 mi (190 km)
TollOn a free road
National Highway SystemNo

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 IRR/S54D Santee SP over Lost Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is IRR/S54D Santee SP over Lost 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 October 2024.

How much traffic does IRR/S54D Santee SP over Lost Creek carry?

About 740 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is IRR/S54D Santee SP over Lost Creek?

The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns IRR/S54D Santee SP over Lost Creek?

It is owned by the State Highway Agency.