US Bridges

County RD 717 over ST Johns Byu

FairPosted for load

New Madrid County, Missouri · S 16 T 23 N R 15 E · Structure no. 15881

Built
1934
91 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
192 ft
4 main spans
Daily traffic
15
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 717 over ST Johns Byu is a steel stringer/multi-beam or girder carrying County RD 717 over ST Johns Byu in New Madrid County, Missouri. It was built in 1934, so it is 91 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 15 vehicles a day, roughly 10% of them trucks, projected to reach 20 by 2043. The structure is 192 ft (58.5 m) long and 14 ft wide. If it were closed, the detour would be 9.3 mi (15 km).

Location

Open in Google Maps
CarriesCounty RD 717
CrossesST Johns Byu
LocationS 16 T 23 N R 15 E
RouteCounty Highway 102
CountyNew Madrid County
StateMissouri
Coordinates36.62884, -89.44058
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating26.8 US tons
Inventory rating15.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 10
Structure length192 ft (58.5 m)
Longest span40 ft (12.2 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2023)
Projected traffic20 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.3 mi (15 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 717 over ST Johns Byu built?

It was built in 1934, making it 91 years old in 2025.

What condition is County RD 717 over ST Johns Byu 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 December 2024.

How much traffic does County RD 717 over ST Johns Byu carry?

About 15 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 717 over ST Johns Byu?

The structure is 192 ft (58.5 m) long with a longest span of 40 ft (12.2 m) and a deck 14 ft wide.

Who owns County RD 717 over ST Johns Byu?

It is owned by the County Highway Agency.