US Bridges

Old ST Thomas RD over Sugar CR

Fair

Miller County, Missouri · S 11 T 41 N R 12 W · Structure no. 15715

Built
1930
95 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
43 ft
5 main spans
Daily traffic
25
2023 count
Owner
County
County Highway Agency

About this bridge

Old ST Thomas RD over Sugar CR is a concrete slab carrying Old ST Thomas RD over Sugar CR in Miller County, Missouri. It was built in 1930, so it is 95 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 43 by 2043. The structure is 43 ft (13.1 m) long and 16 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesOld ST Thomas RD
CrossesSugar CR
LocationS 11 T 41 N R 12 W
RouteCounty Highway 97
CountyMiller County
StateMissouri
Coordinates38.31647, -92.21914
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJanuary 2025
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadOther
Structure length43 ft (13.1 m)
Longest span8 ft (2.4 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic43 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$366,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old ST Thomas RD over Sugar CR built?

It was built in 1930, making it 95 years old in 2025.

What condition is Old ST Thomas RD 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 January 2025.

How much traffic does Old ST Thomas RD over Sugar CR carry?

About 25 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Old ST Thomas RD over Sugar CR?

The structure is 43 ft (13.1 m) long with a longest span of 8 ft (2.4 m) and a deck 16 ft wide.

Who owns Old ST Thomas RD over Sugar CR?

It is owned by the County Highway Agency.