US Bridges

Local RD 20.4-T.0 over Stream Lwc

Poor

Allen County, Kansas · 1.6W 1.0N of Savonburg · Structure no. 000011055406080

Built
1930
95 years old
Condition
Poor
inspected January 2024
Type
Slab
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
20
2006 count
Owner
County
County Highway Agency

About this bridge

Local RD 20.4-T.0 over Stream Lwc is a concrete continuous slab carrying Local RD 20.4-T.0 over Stream Lwc in Allen 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.

It carries about 20 vehicles a day, projected to reach 20 by 2044. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLocal RD 20.4-T.0
CrossesStream Lwc
Location1.6W 1.0N of Savonburg
RouteCounty Highway 0
CountyAllen County
StateKansas
Coordinates37.76175, -95.1718
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span11 ft (3.3 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2006)
Projected traffic20 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$195,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Local RD 20.4-T.0 over Stream Lwc built?

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

What condition is Local RD 20.4-T.0 over Stream Lwc 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 January 2024.

How much traffic does Local RD 20.4-T.0 over Stream Lwc carry?

About 20 vehicles per day (2006 count).

How long is Local RD 20.4-T.0 over Stream Lwc?

The structure is 30 ft (9.1 m) long with a longest span of 11 ft (3.3 m) and a deck 24 ft wide.

Who owns Local RD 20.4-T.0 over Stream Lwc?

It is owned by the County Highway Agency.