US Bridges

320th Avenue over Big Creek

Fair

Ellis County, Kansas · 4.0N 1.3W of Pfeifer · Structure no. 000260621004702

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
45
2020 count
Owner
County
County Highway Agency

About this bridge

320th Avenue over Big Creek is a prestressed concrete tee beam carrying 320th Avenue over Big Creek in Ellis County, Kansas. It was built in 1975, so it is 50 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 45 vehicles a day, roughly 5% of them trucks, projected to reach 54 by 2044. The structure is 61 ft (18.6 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries320th Avenue
CrossesBig Creek
Location4.0N 1.3W of Pfeifer
RouteCounty Highway 0
CountyEllis County
StateKansas
Coordinates38.76519, -99.18972
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadH 15
Structure length61 ft (18.6 m)
Longest span57 ft (17.4 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic45 (2020)
Projected traffic54 by 2044
Trucks5%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 320th Avenue over Big Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is 320th Avenue over Big 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 December 2024.

How much traffic does 320th Avenue over Big Creek carry?

About 45 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 320th Avenue over Big Creek?

The structure is 61 ft (18.6 m) long with a longest span of 57 ft (17.4 m) and a deck 26 ft wide.

Who owns 320th Avenue over Big Creek?

It is owned by the County Highway Agency.