US Bridges

SW Frank Ross RD over Little Third Fork

Good

DeKalb County, Missouri · S 8 T 58 N R 32 W · Structure no. 36312

Built
2020
5 years old
Condition
Good
inspected January 2025
Type
Tee Beam
Prestressed Concrete
Length
113 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

SW Frank Ross RD over Little Third Fork is a prestressed concrete tee beam carrying SW Frank Ross RD over Little Third Fork in DeKalb County, Missouri. It was built in 2020, so it is 5 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 29 by 2044. The structure is 113 ft (34.3 m) long and 25 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSW Frank Ross RD
CrossesLittle Third Fork
LocationS 8 T 58 N R 32 W
RouteCounty Highway 325
Coordinates39.86423, -94.51239
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating108.1 US tons
Inventory rating46.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length113 ft (34.3 m)
Longest span109 ft (33.3 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic29 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 SW Frank Ross RD over Little Third Fork built?

It was built in 2020, making it 5 years old in 2025.

What condition is SW Frank Ross RD over Little Third Fork 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 January 2025.

How much traffic does SW Frank Ross RD over Little Third Fork carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SW Frank Ross RD over Little Third Fork?

The structure is 113 ft (34.3 m) long with a longest span of 109 ft (33.3 m) and a deck 25 ft wide.

Who owns SW Frank Ross RD over Little Third Fork?

It is owned by the County Highway Agency.