US Bridges

Bala RD B.4-17.7T over Timber Creek

FairPosted for load

Riley County, Kansas · 1.1N 5.7W of Riley · Structure no. 000810863403947

Built
1930
95 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
57 ft
1 main span
Daily traffic
31
2004 count
Owner
County
County Highway Agency

About this bridge

Bala RD B.4-17.7T over Timber Creek is a steel stringer/multi-beam or girder carrying Bala RD B.4-17.7T over Timber Creek in Riley 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. Its operating status is: posted for load restriction.

It carries about 31 vehicles a day, projected to reach 35 by 2044. The structure is 57 ft (17.4 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesBala RD B.4-17.7T
CrossesTimber Creek
Location1.1N 5.7W of Riley
RouteCounty Highway 0
CountyRiley County
StateKansas
Coordinates39.31019, -96.93456
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15.5 US tons
Inventory rating9.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length57 ft (17.4 m)
Longest span54 ft (16.4 m)
Deck width23 ft (7 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic31 (2004)
Projected traffic35 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$185,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bala RD B.4-17.7T over Timber Creek built?

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

What condition is Bala RD B.4-17.7T over Timber 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 Bala RD B.4-17.7T over Timber Creek carry?

About 31 vehicles per day (2004 count).

How long is Bala RD B.4-17.7T over Timber Creek?

The structure is 57 ft (17.4 m) long with a longest span of 54 ft (16.4 m) and a deck 23 ft wide.

Who owns Bala RD B.4-17.7T over Timber Creek?

It is owned by the County Highway Agency.