US Bridges

Happy Sac RD over Happy Sac CR

Fair

Franklin County, Missouri · S 14 T 42 N R 1 W · Structure no. 29499

Built
2003
22 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
153 ft
3 main spans
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

Happy Sac RD over Happy Sac CR is a prestressed concrete continuous stringer/multi-beam or girder carrying Happy Sac RD over Happy Sac CR in Franklin County, Missouri. It was built in 2003, so it is 22 years old, younger 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 150 vehicles a day, roughly 10% of them trucks, projected to reach 270 by 2043. The structure is 153 ft (46.6 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHappy Sac RD
CrossesHappy Sac CR
LocationS 14 T 42 N R 1 W
RouteCounty Highway 0
CountyFranklin County
StateMissouri
Coordinates38.38301, -91.00015
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span65 ft (19.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic270 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Happy Sac RD over Happy Sac CR built?

It was built in 2003, making it 22 years old in 2025.

What condition is Happy Sac RD over Happy Sac CR 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 January 2025.

How much traffic does Happy Sac RD over Happy Sac CR carry?

About 150 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Happy Sac RD over Happy Sac CR?

The structure is 153 ft (46.6 m) long with a longest span of 65 ft (19.8 m) and a deck 27 ft wide.

Who owns Happy Sac RD over Happy Sac CR?

It is owned by the County Highway Agency.