US Bridges

County RD 170 over South Fk Highely C

Good

Holt County, Missouri · S 19 T 62 N R 37 W · Structure no. 34140

Built
2012
13 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
83 ft
2 main spans
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 170 over South Fk Highely C is a prestressed concrete continuous stringer/multi-beam or girder carrying County RD 170 over South Fk Highely C in Holt County, Missouri. It was built in 2012, so it is 13 years old, younger than the Missouri average of 45.1 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.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 83 ft (25.3 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesCounty RD 170
CrossesSouth Fk Highely C
LocationS 19 T 62 N R 37 W
RouteCounty Highway 80
Coordinates40.15911, -95.11226
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.3 US tons
Inventory rating55.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length83 ft (25.3 m)
Longest span41 ft (12.6 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 170 over South Fk Highely C built?

It was built in 2012, making it 13 years old in 2025.

What condition is County RD 170 over South Fk Highely C 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 November 2023.

How much traffic does County RD 170 over South Fk Highely C carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 170 over South Fk Highely C?

The structure is 83 ft (25.3 m) long with a longest span of 41 ft (12.6 m) and a deck 27 ft wide.

Who owns County RD 170 over South Fk Highely C?

It is owned by the County Highway Agency.