US Bridges

Boyd RD over Unnamed CR

Fair

Ste. Genevieve County, Missouri · S 3 T 35 N R 8 E · Structure no. 31673

Built
2002
23 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
54 ft
3 main spans
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

Boyd RD over Unnamed CR is a concrete continuous slab carrying Boyd RD over Unnamed CR in Ste. Genevieve County, Missouri. It was built in 2002, so it is 23 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 68 by 2044. The structure is 54 ft (16.5 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBoyd RD
CrossesUnnamed CR
LocationS 3 T 35 N R 8 E
RouteCounty Highway 103
CountySte. Genevieve County
StateMissouri
Coordinates37.76449, -90.13422
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating30.8 US tons
Inventory rating18.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length54 ft (16.5 m)
Longest span12 ft (3.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic68 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Boyd RD over Unnamed CR built?

It was built in 2002, making it 23 years old in 2025.

What condition is Boyd RD over Unnamed 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 February 2024.

How much traffic does Boyd RD over Unnamed CR carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Boyd RD over Unnamed CR?

The structure is 54 ft (16.5 m) long with a longest span of 12 ft (3.7 m) and a deck 24 ft wide.

Who owns Boyd RD over Unnamed CR?

It is owned by the County Highway Agency.