US Bridges

County RD 280 over Bynum CR

Fair

Callaway County, Missouri · S 8 T 49 N R 9 W · Structure no. 28560

Built
2000
25 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 280 over Bynum CR is a steel stringer/multi-beam or girder carrying County RD 280 over Bynum CR in Callaway County, Missouri. It was built in 2000, so it is 25 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.

It carries about 40 vehicles a day, roughly 5% of them trucks, projected to reach 60 by 2043. The structure is 62 ft (18.9 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty RD 280
CrossesBynum CR
LocationS 8 T 49 N R 9 W
RouteCounty Highway 47
CountyCallaway County
StateMissouri
Coordinates39.04006, -91.93831
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length62 ft (18.9 m)
Longest span62 ft (18.9 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic60 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 280 over Bynum CR built?

It was built in 2000, making it 25 years old in 2025.

What condition is County RD 280 over Bynum 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 2024.

How much traffic does County RD 280 over Bynum CR carry?

About 40 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is County RD 280 over Bynum CR?

The structure is 62 ft (18.9 m) long with a longest span of 62 ft (18.9 m) and a deck 24 ft wide.

Who owns County RD 280 over Bynum CR?

It is owned by the County Highway Agency.