US Bridges

County RD 439 over Shady CR

PoorPosted for load

Pike County, Missouri · S 24 T 52 N R 5 W · Structure no. 17046

Built
1900
125 years old
Condition
Poor
inspected July 2024
Type
Truss - Thru
Steel
Length
50 ft
1 main span
Daily traffic
5
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 439 over Shady CR is a steel truss - thru carrying County RD 439 over Shady CR in Pike County, Missouri. It was built in 1900, so it is 125 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, roughly 10% of them trucks, projected to reach 6 by 2043. The structure is 50 ft (15.2 m) long and 12 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCounty RD 439
CrossesShady CR
LocationS 24 T 52 N R 5 W
RouteCounty Highway 141
CountyPike County
StateMissouri
Coordinates39.26033, -91.40617
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating5 US tons
Inventory rating3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2023)
Projected traffic6 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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$399,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 439 over Shady CR built?

It was built in 1900, making it 125 years old in 2025.

What condition is County RD 439 over Shady CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does County RD 439 over Shady CR carry?

About 5 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 439 over Shady CR?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 12 ft wide.

Who owns County RD 439 over Shady CR?

It is owned by the County Highway Agency.