US Bridges

SW 46th RD over Sugar CR

FairPosted for load

Buchanan County, Missouri · S 28 T 55 N R 36 W · Structure no. 20920

Built
1970
55 years old
Condition
Fair
inspected January 2023
Type
Truss - Thru
Steel
Length
100 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

SW 46th RD over Sugar CR is a steel truss - thru carrying SW 46th RD over Sugar CR in Buchanan County, Missouri. It was built in 1970, so it is 55 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. Its operating status is: posted for load restriction.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 29 by 2044. The structure is 100 ft (30.5 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSW 46th RD
CrossesSugar CR
LocationS 28 T 55 N R 36 W
RouteCounty Highway 280
CountyBuchanan County
StateMissouri
Coordinates39.55064, -94.94017
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.
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 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.8 US tons
Inventory rating15.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadOther
Structure length100 ft (30.5 m)
Longest span71 ft (21.6 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic29 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 SW 46th RD over Sugar CR built?

It was built in 1970, making it 55 years old in 2025.

What condition is SW 46th 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 2023.

How much traffic does SW 46th RD over Sugar CR carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SW 46th RD over Sugar CR?

The structure is 100 ft (30.5 m) long with a longest span of 71 ft (21.6 m) and a deck 22 ft wide.

Who owns SW 46th RD over Sugar CR?

It is owned by the County Highway Agency.