US Bridges

Mo 17 S over Hay Hollow

Fair

Howell County, Missouri · S 10 T 22 N R 8 W · Structure no. 9612

Built
1950
75 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete Continuous
Length
20 ft
2 main spans
Daily traffic
2,507
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 17 S over Hay Hollow is a concrete continuous culvert carrying Mo 17 S over Hay Hollow in Howell County, Missouri. It was built in 1950, so it is 75 years old, older than the Missouri average of 45.1 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 2,507 vehicles a day, roughly 6% of them trucks, projected to reach 3,761 by 2044. The structure is 20 ft (6.2 m) long and 27 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

Location

Open in Google Maps
CarriesMo 17 S
CrossesHay Hollow
LocationS 10 T 22 N R 8 W
RouteState Highway 17
CountyHowell County
StateMissouri
Coordinates36.57781, -91.82097
Functional classRural Major Collector

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length20 ft (6.2 m)
Longest span10 ft (3 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,507 (2024)
Projected traffic3,761 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$306,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 17 S over Hay Hollow built?

It was built in 1950, making it 75 years old in 2025.

What condition is Mo 17 S over Hay Hollow 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 October 2024.

How much traffic does Mo 17 S over Hay Hollow carry?

About 2,507 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Mo 17 S over Hay Hollow?

The structure is 20 ft (6.2 m) long with a longest span of 10 ft (3 m) and a deck 27 ft wide.

Who owns Mo 17 S over Hay Hollow?

It is owned by the State Highway Agency.