US Bridges

SE 30 RD over Silver Creek

FairPosted for load

Harper County, Kansas · 2.5N 2.8W of Bluff City · Structure no. 000390755206980

Built
1957
68 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
80
2021 count
Owner
County
County Highway Agency

About this bridge

SE 30 RD over Silver Creek is a concrete continuous slab carrying SE 30 RD over Silver Creek in Harper County, Kansas. It was built in 1957, so it is 68 years old, older than the Kansas average of 52.8 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 80 vehicles a day, projected to reach 80 by 2043. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSE 30 RD
CrossesSilver Creek
Location2.5N 2.8W of Bluff City
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.10961, -97.92508
Functional classRural Minor Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.8 US tons
Inventory rating17.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length120 ft (36.6 m)
Longest span45 ft (13.7 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic80 (2021)
Projected traffic80 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 30 RD over Silver Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is SE 30 RD over Silver 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 January 2024.

How much traffic does SE 30 RD over Silver Creek carry?

About 80 vehicles per day (2021 count).

How long is SE 30 RD over Silver Creek?

The structure is 120 ft (36.6 m) long with a longest span of 45 ft (13.7 m) and a deck 29 ft wide.

Who owns SE 30 RD over Silver Creek?

It is owned by the County Highway Agency.