US Bridges

Rt C S over Big Rock CR

Fair

Worth County, Missouri · S 4 T 65 N R 30 W · Structure no. 9906

Built
1950
75 years old, rebuilt 2002
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
111 ft
3 main spans
Daily traffic
364
2024 count
Owner
State
State Highway Agency

About this bridge

Rt C S over Big Rock CR is a steel stringer/multi-beam or girder carrying Rt C S over Big Rock CR in Worth County, Missouri. It was built in 1950 and reconstructed in 2002, 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 5 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 364 vehicles a day, roughly 21% of them trucks, projected to reach 473 by 2044. The structure is 111 ft (33.8 m) long and 25 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesRt C S
CrossesBig Rock CR
LocationS 4 T 65 N R 30 W
RouteState Highway 0C
CountyWorth County
StateMissouri
Coordinates40.46348, -94.29046
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.7 US tons
Inventory rating24.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 10
Structure length111 ft (33.8 m)
Longest span47 ft (14.4 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic364 (2024)
Projected traffic473 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt C S over Big Rock CR built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2002.

What condition is Rt C S over Big Rock 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 September 2023.

How much traffic does Rt C S over Big Rock CR carry?

About 364 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is Rt C S over Big Rock CR?

The structure is 111 ft (33.8 m) long with a longest span of 47 ft (14.4 m) and a deck 25 ft wide.

Who owns Rt C S over Big Rock CR?

It is owned by the State Highway Agency.