US Bridges

100th Road over Unnamed Stream

PoorPosted for load

Lincoln County, Kansas · 0.7N 2.0E of Vesper · Structure no. 000530715004309

Built
1930
95 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

100th Road over Unnamed Stream is a steel stringer/multi-beam or girder carrying 100th Road over Unnamed Stream 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 4 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 45 vehicles a day, roughly 5% of them trucks, projected to reach 55 by 2044. The structure is 23 ft (6.9 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries100th Road
CrossesUnnamed Stream
Location0.7N 2.0E of Vesper
RouteCounty Highway 0
StateKansas
Coordinates39.04556, -98.31833
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.3 US tons
Inventory rating11 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (6.9 m)
Longest span20 ft (6 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic45 (2022)
Projected traffic55 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$430,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 100th Road over Unnamed Stream built?

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

What condition is 100th Road over Unnamed Stream 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 100th Road over Unnamed Stream carry?

About 45 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 100th Road over Unnamed Stream?

The structure is 23 ft (6.9 m) long with a longest span of 20 ft (6 m) and a deck 27 ft wide.

Who owns 100th Road over Unnamed Stream?

It is owned by the County Highway Agency.