US Bridges

399th ST over NB & SB US69 HWY

Good

Miami County, Kansas · .98 Miles N of Scoln · Structure no. 999906900611121

Built
2004
21 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
295 ft
4 main spans
Daily traffic
37
2023 count
Owner
State
State Highway Agency

About this bridge

399th ST over NB & SB US69 HWY is a steel continuous stringer/multi-beam or girder carrying 399th ST over NB & SB US69 HWY in Miami County, Kansas. It was built in 2004, so it is 21 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 37 vehicles a day, roughly 3% of them trucks. The structure is 295 ft (89.9 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries399th ST
CrossesNB & SB US69 HWY
Location.98 Miles N of Scoln
RouteCounty Highway 1022
StateKansas
Coordinates38.40306, -94.68778
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating53.6 US tons
Inventory rating41.4 US tons

Structure

MaterialSteel Continuous
DeckNot applicable
Main spans4
Design loadHL 93
Structure length295 ft (89.9 m)
Longest span91 ft (27.8 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37 (2023)
Projected traffic—
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 399th ST over NB & SB US69 HWY built?

It was built in 2004, making it 21 years old in 2025.

What condition is 399th ST over NB & SB US69 HWY 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 February 2024.

How much traffic does 399th ST over NB & SB US69 HWY carry?

About 37 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 399th ST over NB & SB US69 HWY?

The structure is 295 ft (89.9 m) long with a longest span of 91 ft (27.8 m) and a deck 38 ft wide.

Who owns 399th ST over NB & SB US69 HWY?

It is owned by the State Highway Agency.