US Bridges

Mo 240 E over Rock CR

Poor

Saline County, Missouri · S 26 T 51 N R 20 W · Structure no. 4677

Built
1924
101 years old
Condition
Poor
inspected December 2023
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
2,932
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 240 E over Rock CR is a concrete continuous culvert carrying Mo 240 E over Rock CR in Saline County, Missouri. It was built in 1924, so it is 101 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 2,932 vehicles a day, roughly 10% of them trucks, projected to reach 3,812 by 2044. The structure is 29 ft (8.8 m) long and 36 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesMo 240 E
CrossesRock CR
LocationS 26 T 51 N R 20 W
RouteState Highway 240
CountySaline County
StateMissouri
Coordinates39.17781, -93.07346
Functional classRural Minor Arterial

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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.2 US tons
Inventory rating59.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length29 ft (8.8 m)
Longest span12 ft (3.7 m)
Deck width36 ft (10.9 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,932 (2024)
Projected traffic3,812 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$306,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 240 E over Rock CR built?

It was built in 1924, making it 101 years old in 2025.

What condition is Mo 240 E over Rock 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 December 2023.

How much traffic does Mo 240 E over Rock CR carry?

About 2,932 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mo 240 E over Rock CR?

The structure is 29 ft (8.8 m) long with a longest span of 12 ft (3.7 m) and a deck 36 ft wide.

Who owns Mo 240 E over Rock CR?

It is owned by the State Highway Agency.