US Bridges

K99 HWY over Mound Branch Drainage

Fair

Elk County, Kansas · 3.17 MI N Ejct US160 · Structure no. 999909900250171

Built
1931
94 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
1,508
2023 count
Owner
State
State Highway Agency

About this bridge

K99 HWY over Mound Branch Drainage is a concrete culvert carrying K99 HWY over Mound Branch Drainage in Elk County, Kansas. It was built in 1931, so it is 94 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,508 vehicles a day, roughly 20% of them trucks, projected to reach 1,840 by 2044. The structure is 29 ft (8.7 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesK99 HWY
CrossesMound Branch Drainage
Location3.17 MI N Ejct US160
RouteState Highway 99
CountyElk County
StateKansas
Coordinates37.41639, -96.27083
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length29 ft (8.7 m)
Longest span9 ft (2.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,508 (2023)
Projected traffic1,840 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 K99 HWY over Mound Branch Drainage built?

It was built in 1931, making it 94 years old in 2025.

What condition is K99 HWY over Mound Branch Drainage in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does K99 HWY over Mound Branch Drainage carry?

About 1,508 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is K99 HWY over Mound Branch Drainage?

The structure is 29 ft (8.7 m) long with a longest span of 9 ft (2.7 m) and a deck 32 ft wide.

Who owns K99 HWY over Mound Branch Drainage?

It is owned by the State Highway Agency.