US Bridges

County RD 844 over S Fk Salt Rvr

Good

Audrain County, Missouri · S 30 T 50 N R 8 W · Structure no. 30690

Built
2005
20 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 844 over S Fk Salt Rvr is a prestressed concrete stringer/multi-beam or girder carrying County RD 844 over S Fk Salt Rvr in Audrain County, Missouri. It was built in 2005, so it is 20 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 15% of them trucks, projected to reach 188 by 2043. The structure is 90 ft (27.4 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesCounty RD 844
CrossesS Fk Salt Rvr
LocationS 30 T 50 N R 8 W
RouteCounty Highway 304
CountyAudrain County
StateMissouri
Coordinates39.08339, -91.85086
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span85 ft (25.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic188 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 County RD 844 over S Fk Salt Rvr built?

It was built in 2005, making it 20 years old in 2025.

What condition is County RD 844 over S Fk Salt Rvr 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 April 2023.

How much traffic does County RD 844 over S Fk Salt Rvr carry?

About 150 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is County RD 844 over S Fk Salt Rvr?

The structure is 90 ft (27.4 m) long with a longest span of 85 ft (25.9 m) and a deck 26 ft wide.

Who owns County RD 844 over S Fk Salt Rvr?

It is owned by the County Highway Agency.