US Bridges

County RD NE 100 over Brush CR

PoorPosted for load

St. Clair County, Missouri · S 22 T 38 N R 25 W · Structure no. 19884

Built
1930
95 years old
Condition
Poor
inspected December 2023
Type
Slab
Concrete
Length
22 ft
2 main spans
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

County RD NE 100 over Brush CR is a concrete slab carrying County RD NE 100 over Brush CR in St. Clair County, Missouri. It was built in 1930, so it is 95 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 24 by 2043. The structure is 22 ft (6.7 m) long and 16 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCounty RD NE 100
CrossesBrush CR
LocationS 22 T 38 N R 25 W
RouteCounty Highway 238
CountySt. Clair County
StateMissouri
Coordinates38.03479, -93.66143
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating16.9 US tons
Inventory rating9.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic24 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$239,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD NE 100 over Brush CR built?

It was built in 1930, making it 95 years old in 2025.

What condition is County RD NE 100 over Brush 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 County RD NE 100 over Brush CR carry?

About 20 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD NE 100 over Brush CR?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m) and a deck 16 ft wide.

Who owns County RD NE 100 over Brush CR?

It is owned by the County Highway Agency and maintained by the Other Local Agency.