US Bridges

Ridge RD over Turnbo CR

Poor

Webster County, Missouri · S 35 T 30 N R 19 W · Structure no. 19796

Built
1900
125 years old
Condition
Poor
inspected April 2023
Type
Slab
Concrete Continuous
Length
28 ft
3 main spans
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

Ridge RD over Turnbo CR is a concrete continuous slab carrying Ridge RD over Turnbo CR in Webster 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.

It carries about 150 vehicles a day, roughly 10% of them trucks, projected to reach 248 by 2043. The structure is 28 ft (8.5 m) long and 19 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesRidge RD
CrossesTurnbo CR
LocationS 35 T 30 N R 19 W
RouteCounty Highway 234
CountyWebster County
StateMissouri
Coordinates37.2718, -92.98522
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length28 ft (8.5 m)
Longest span9 ft (2.7 m)
Deck width19 ft (5.7 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic248 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$272,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ridge RD over Turnbo CR built?

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

What condition is Ridge RD over Turnbo 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 April 2023.

How much traffic does Ridge RD over Turnbo CR carry?

About 150 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Ridge RD over Turnbo CR?

The structure is 28 ft (8.5 m) long with a longest span of 9 ft (2.7 m) and a deck 19 ft wide.

Who owns Ridge RD over Turnbo CR?

It is owned by the County Highway Agency.