US Bridges

270 Road over Oak Creek

Good

Smith County, Kansas · 4.0N 9.5E of Portis · Structure no. 000920695303520

Built
2019
6 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

270 Road over Oak Creek is a concrete continuous slab carrying 270 Road over Oak Creek in Smith County, Kansas. It was built in 2019, so it is 6 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 20 by 2043. The structure is 103 ft (31.4 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries270 Road
CrossesOak Creek
Location4.0N 9.5E of Portis
RouteCounty Highway 689
CountySmith County
StateKansas
Coordinates39.62568, -98.5168
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating57.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length103 ft (31.4 m)
Longest span40 ft (12.1 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 traffic20 (2020)
Projected traffic20 by 2043
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 270 Road over Oak Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is 270 Road over Oak Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does 270 Road over Oak Creek carry?

About 20 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 270 Road over Oak Creek?

The structure is 103 ft (31.4 m) long with a longest span of 40 ft (12.1 m) and a deck 30 ft wide.

Who owns 270 Road over Oak Creek?

It is owned by the County Highway Agency.