US Bridges

Alt RD S over Pond CR

Fair

St. Louis County, Missouri · S 24 T 44 N R 3 E · Structure no. 4423

Built
1997
28 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
1,165
2024 count
Owner
State
State Highway Agency

About this bridge

Alt RD S over Pond CR is a concrete continuous culvert carrying Alt RD S over Pond CR in St. Louis County, Missouri. It was built in 1997, so it is 28 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 1,165 vehicles a day, roughly 1% of them trucks, projected to reach 1,748 by 2044. The structure is 26 ft (8 m) long. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesAlt RD S
CrossesPond CR
LocationS 24 T 44 N R 3 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.54114, -90.63186
Functional classRural Minor Collector

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96.2 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (8 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,165 (2024)
Projected traffic1,748 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Alt RD S over Pond CR built?

It was built in 1997, making it 28 years old in 2025.

What condition is Alt RD S over Pond 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 November 2023.

How much traffic does Alt RD S over Pond CR carry?

About 1,165 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Alt RD S over Pond CR?

The structure is 26 ft (8 m) long with a longest span of 8 ft (2.4 m).

Who owns Alt RD S over Pond CR?

It is owned by the State Highway Agency.