US Bridges

R F Gammon RD over Br of Prairie CR

Good

Jackson County, Missouri · S 21 T 47 N R 30 W · Structure no. 28726

Built
2001
24 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
122
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

R F Gammon RD over Br of Prairie CR is a concrete slab carrying R F Gammon RD over Br of Prairie CR in Jackson County, Missouri. It was built in 2001, so it is 24 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 122 vehicles a day, roughly 2% of them trucks, projected to reach 183 by 2044. The structure is 27 ft (8.2 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesR F Gammon RD
CrossesBr of Prairie CR
LocationS 21 T 47 N R 30 W
RouteCounty Highway 345
Coordinates38.86754, -94.23829
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.2 US tons
Inventory rating56.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122 (2024)
Projected traffic183 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 R F Gammon RD over Br of Prairie CR built?

It was built in 2001, making it 24 years old in 2025.

What condition is R F Gammon RD over Br of Prairie CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does R F Gammon RD over Br of Prairie CR carry?

About 122 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is R F Gammon RD over Br of Prairie CR?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 29 ft wide.

Who owns R F Gammon RD over Br of Prairie CR?

It is owned by the City or Municipal Highway Agency.