US Bridges

Central School RD over Baltic CR

Fair

St. Charles County, Missouri · S 1784 T 46 N R 3 E · Structure no. 28498

Built
1999
26 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
60 ft
4 main spans
Daily traffic
5,000
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Central School RD over Baltic CR is a concrete culvert carrying Central School RD over Baltic CR in St. Charles County, Missouri. It was built in 1999, so it is 26 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 7,750 by 2044. The structure is 60 ft (18.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCentral School RD
CrossesBaltic CR
LocationS 1784 T 46 N R 3 E
RouteCity Street 0
CountySt. Charles County
StateMissouri
Coordinates38.74418, -90.63209
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2024)
Projected traffic7,750 by 2044
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Central School RD over Baltic CR built?

It was built in 1999, making it 26 years old in 2025.

What condition is Central School RD over Baltic CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does Central School RD over Baltic CR carry?

About 5,000 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Central School RD over Baltic CR?

The structure is 60 ft (18.3 m) long with a longest span of 14 ft (4.3 m).

Who owns Central School RD over Baltic CR?

It is owned by the City or Municipal Highway Agency.