US Bridges

County RD 480 over Gallons CR

Fair

Callaway County, Missouri · S 16 T 45 N R 9 W · Structure no. 20708

Built
1920
105 years old, rebuilt 1987
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
35
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 480 over Gallons CR is a steel stringer/multi-beam or girder carrying County RD 480 over Gallons CR in Callaway County, Missouri. It was built in 1920 and reconstructed in 1987, so it is 105 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 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 35 vehicles a day, roughly 5% of them trucks, projected to reach 53 by 2043. The structure is 75 ft (22.9 m) long and 20 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty RD 480
CrossesGallons CR
LocationS 16 T 45 N R 9 W
RouteCounty Highway 271
CountyCallaway County
StateMissouri
Coordinates38.64692, -91.93586
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length75 ft (22.9 m)
Longest span75 ft (22.9 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2023)
Projected traffic53 by 2043
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 480 over Gallons CR built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1987.

What condition is County RD 480 over Gallons 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 October 2024.

How much traffic does County RD 480 over Gallons CR carry?

About 35 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is County RD 480 over Gallons CR?

The structure is 75 ft (22.9 m) long with a longest span of 75 ft (22.9 m) and a deck 20 ft wide.

Who owns County RD 480 over Gallons CR?

It is owned by the County Highway Agency.