US Bridges

Frazier RD over Trib of Boyd Br

Fair

Jefferson County, Missouri · S 30 T 39 N R 6 E · Structure no. 22456

Built
1970
55 years old, rebuilt 1995
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
66
2023 count
Owner
County
County Highway Agency

About this bridge

Frazier RD over Trib of Boyd Br is a concrete continuous culvert carrying Frazier RD over Trib of Boyd Br in Jefferson County, Missouri. It was built in 1970 and reconstructed in 1995, 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 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 66 vehicles a day, roughly 10% of them trucks, projected to reach 132 by 2043. The structure is 27 ft (8.2 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFrazier RD
CrossesTrib of Boyd Br
LocationS 30 T 39 N R 6 E
RouteCounty Highway 354
CountyJefferson County
StateMissouri
Coordinates38.06845, -90.40155
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66 (2023)
Projected traffic132 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Frazier RD over Trib of Boyd Br built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1995.

What condition is Frazier RD over Trib of Boyd Br 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 Frazier RD over Trib of Boyd Br carry?

About 66 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Frazier RD over Trib of Boyd Br?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 30 ft wide.

Who owns Frazier RD over Trib of Boyd Br?

It is owned by the County Highway Agency.