US Bridges

300th Road over Salt Creek

PoorPosted for load

Lincoln County, Kansas · 1.6S 4.7E of Barnard · Structure no. 000530755004161

Built
1930
95 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

300th Road over Salt Creek is a steel stringer/multi-beam or girder carrying 300th Road over Salt 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 5% of them trucks, projected to reach 35 by 2044. The structure is 32 ft (9.8 m) long and 18 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries300th Road
CrossesSalt Creek
Location1.6S 4.7E of Barnard
RouteCounty Highway 0
StateKansas
Coordinates39.15957, -97.94887
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating56.5 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width18 ft (5.6 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic30 (2022)
Projected traffic35 by 2044
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$430,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 300th Road over Salt Creek built?

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

What condition is 300th Road over Salt Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does 300th Road over Salt Creek carry?

About 30 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 300th Road over Salt Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 18 ft wide.

Who owns 300th Road over Salt Creek?

It is owned by the County Highway Agency.