US Bridges

Castlewood RD over Kiefer CR

FairPosted for load

St. Louis County, Missouri · S 15 T 44 N R 4 E · Structure no. 15612

Built
1962
63 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
242
2024 count
Owner
County
County Highway Agency

About this bridge

Castlewood RD over Kiefer CR is a steel stringer/multi-beam or girder carrying Castlewood RD over Kiefer CR in St. Louis County, Missouri. It was built in 1962, so it is 63 years old, older 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. Its operating status is: posted for load restriction.

It carries about 242 vehicles a day, roughly 3% of them trucks, projected to reach 327 by 2044. The structure is 45 ft (13.7 m) long and 24 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesCastlewood RD
CrossesKiefer CR
LocationS 15 T 44 N R 4 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.55564, -90.55136
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating65.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadOther
Structure length45 ft (13.7 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic242 (2024)
Projected traffic327 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Castlewood RD over Kiefer CR built?

It was built in 1962, making it 63 years old in 2025.

What condition is Castlewood RD over Kiefer 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 April 2024.

How much traffic does Castlewood RD over Kiefer CR carry?

About 242 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Castlewood RD over Kiefer CR?

The structure is 45 ft (13.7 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Castlewood RD over Kiefer CR?

It is owned by the County Highway Agency.