US Bridges

Mount Olive RD over Br of Salt Fk

Poor

Saline County, Missouri · S 8 T 49 N R 20 W · Structure no. 17456

Built
1920
105 years old
Condition
Poor
inspected March 2024
Type
Slab
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Mount Olive RD over Br of Salt Fk is a concrete continuous slab carrying Mount Olive RD over Br of Salt Fk in Saline County, Missouri. It was built in 1920, so it is 105 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 27 ft (8.2 m) long and 17 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesMount Olive RD
CrossesBr of Salt Fk
LocationS 8 T 49 N R 20 W
RouteCounty Highway 153
Coordinates39.04869, -93.12456
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMarch 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
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 spans2
Design loadOther
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width17 ft (5.2 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Mount Olive RD over Br of Salt Fk built?

It was built in 1920, making it 105 years old in 2025.

What condition is Mount Olive RD over Br of Salt Fk 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 March 2024.

How much traffic does Mount Olive RD over Br of Salt Fk carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mount Olive RD over Br of Salt Fk?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m) and a deck 17 ft wide.

Who owns Mount Olive RD over Br of Salt Fk?

It is owned by the County Highway Agency.