US Bridges

Iron DR over West Twin Creek

Fair

Lincoln County, Kansas · 1.5S 0.2W of Sylvan Grove · Structure no. 000530705804400

Built
1930
95 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
55
2022 count
Owner
County
County Highway Agency

About this bridge

Iron DR over West Twin Creek is a steel stringer/multi-beam or girder carrying Iron DR over West Twin Creek in Lincoln County, Kansas. It was built in 1930, so it is 95 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.

It carries about 55 vehicles a day, roughly 5% of them trucks, projected to reach 65 by 2044. The structure is 33 ft (10 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIron DR
CrossesWest Twin Creek
Location1.5S 0.2W of Sylvan Grove
RouteCounty Highway 0
CountyLincoln County
StateKansas
Coordinates38.98698, -98.397
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.5 US tons
Inventory rating27.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.7 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic55 (2022)
Projected traffic65 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Iron DR over West Twin Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Iron DR over West Twin 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 October 2024.

How much traffic does Iron DR over West Twin Creek carry?

About 55 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Iron DR over West Twin Creek?

The structure is 33 ft (10 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns Iron DR over West Twin Creek?

It is owned by the County Highway Agency.