US Bridges

Local 4-7-3 over Trib. N. Br. Slate Ck.

GoodPosted for load

Sumner County, Kansas · 1.0N 1.3E of Milton · Structure no. 000960775306520

Built
1986
39 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
20
2013 count
Owner
County
County Highway Agency

About this bridge

Local 4-7-3 over Trib. N. Br. Slate Ck. is a steel stringer/multi-beam or girder carrying Local 4-7-3 over Trib. N. Br. Slate Ck. in Sumner County, Kansas. It was built in 1986, so it is 39 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 1% of them trucks, projected to reach 20 by 2043. The structure is 31 ft (9.4 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 4-7-3
CrossesTrib. N. Br. Slate Ck.
Location1.0N 1.3E of Milton
RouteCounty Highway 0
CountySumner County
StateKansas
Coordinates37.44467, -97.74656
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span30 ft (9 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2013)
Projected traffic20 by 2043
Trucks1%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local 4-7-3 over Trib. N. Br. Slate Ck. built?

It was built in 1986, making it 39 years old in 2025.

What condition is Local 4-7-3 over Trib. N. Br. Slate Ck. in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Local 4-7-3 over Trib. N. Br. Slate Ck. carry?

About 20 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is Local 4-7-3 over Trib. N. Br. Slate Ck.?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9 m) and a deck 24 ft wide.

Who owns Local 4-7-3 over Trib. N. Br. Slate Ck.?

It is owned by the County Highway Agency.