US Bridges

Rs 478 RD I over North Bear Creek

FairPosted for load

Hamilton County, Kansas · 11.0S 7.0W of Syracuse · Structure no. 000000000380090

Built
1966
59 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
74 ft
6 main spans
Daily traffic
85
2022 count
Owner
County
County Highway Agency

About this bridge

Rs 478 RD I over North Bear Creek is a concrete culvert carrying Rs 478 RD I over North Bear Creek in Hamilton County, Kansas. It was built in 1966, so it is 59 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 6 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 85 vehicles a day, roughly 10% of them trucks, projected to reach 155 by 2041. The structure is 74 ft (22.6 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesRs 478 RD I
CrossesNorth Bear Creek
Location11.0S 7.0W of Syracuse
RouteCounty Highway 478
CountyHamilton County
StateKansas
Coordinates37.81589, -101.88836
Functional classRural Major 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating25.5 US tons
Inventory rating15.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length74 ft (22.6 m)
Longest span10 ft (3 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic85 (2022)
Projected traffic155 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 478 RD I over North Bear Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Rs 478 RD I over North Bear 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 November 2023.

How much traffic does Rs 478 RD I over North Bear Creek carry?

About 85 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Rs 478 RD I over North Bear Creek?

The structure is 74 ft (22.6 m) long with a longest span of 10 ft (3 m) and a deck 31 ft wide.

Who owns Rs 478 RD I over North Bear Creek?

It is owned by the County Highway Agency.