Rs 397 over First Creek

Fair

Ottawa County, Kansas · 0.4W 0.5N of Ada · Structure no. 000000000720220

Built: 1985; 40 years old
Condition: Fair; inspected February 2024
Type: Slab; Concrete Continuous
Length: 98 ft; 3 main spans
Daily traffic: 170; 2000 count
Owner: County; County Highway Agency

About this bridge

Rs 397 over First Creek is a concrete continuous slab carrying Rs 397 over First Creek in Ottawa County, Kansas. It was built in 1985, so it is 40 years old, younger 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.

It carries about 170 vehicles a day, roughly 9% of them trucks, projected to reach 190 by 2044. The structure is 98 ft (29.9 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRs 397

CrossesFirst Creek

Location0.4W 0.5N of Ada

RouteCounty Highway 397

CountyOttawa County

StateKansas

Coordinates39.15761, -97.8969

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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	7 Good	Some minor problems.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionFebruary 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour within limits of footing or piles

Structural evaluation6: Equal to present minimum criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating73.9 US tons

Inventory rating44.2 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadH 20

Structure length98 ft (29.9 m)

Longest span38 ft (11.6 m)

Deck width30 ft (9.1 m)

Roadway width28 ft (8.5 m)

Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic170 (2000)

Projected traffic190 by 2044

Trucks9%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed5 mi (8 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 397 over First Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Rs 397 over First 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 February 2024.

How much traffic does Rs 397 over First Creek carry?

About 170 vehicles per day (2000 count), of which roughly 9% are trucks.

How long is Rs 397 over First Creek?

The structure is 98 ft (29.9 m) long with a longest span of 38 ft (11.6 m) and a deck 30 ft wide.

Who owns Rs 397 over First Creek?

It is owned by the County Highway Agency.