US Bridges

County RD 1230 over Sugar CR

FairPosted for load

Randolph County, Missouri · S 19 T 54 N R 14 W · Structure no. 18111

Built
1985
40 years old
Condition
Fair
inspected December 2024
Type
Girder and Floorbeam System
Steel
Length
49 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 1230 over Sugar CR is a steel girder and floorbeam system carrying County RD 1230 over Sugar CR in Randolph County, Missouri. It was built in 1985, so it is 40 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 55 by 2043. The structure is 49 ft (14.9 m) long and 18 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesCounty RD 1230
CrossesSugar CR
LocationS 19 T 54 N R 14 W
RouteCounty Highway 173
CountyRandolph County
StateMissouri
Coordinates39.45456, -92.52283
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
Deck7 GoodSome minor problems.
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.8 US tons
Inventory rating16.9 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length49 ft (14.9 m)
Longest span48 ft (14.6 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic55 by 2043
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$272,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 1230 over Sugar CR built?

It was built in 1985, making it 40 years old in 2025.

What condition is County RD 1230 over Sugar 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 December 2024.

How much traffic does County RD 1230 over Sugar CR carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 1230 over Sugar CR?

The structure is 49 ft (14.9 m) long with a longest span of 48 ft (14.6 m) and a deck 18 ft wide.

Who owns County RD 1230 over Sugar CR?

It is owned by the County Highway Agency.