US Bridges

Antire RD over Williams CR

FairPosted for load

St. Louis County, Missouri · S 24 T 44 N R 4 E · Structure no. 15643

Built
1920
105 years old, rebuilt 2014
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
124
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Antire RD over Williams CR is a steel stringer/multi-beam or girder carrying Antire RD over Williams CR in St. Louis County, Missouri. It was built in 1920 and reconstructed in 2014, 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 fair condition with a lowest component rating of 5 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 124 vehicles a day, roughly 3% of them trucks, projected to reach 167 by 2043. The structure is 35 ft (10.7 m) long and 12 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesAntire RD
CrossesWilliams CR
LocationS 24 T 44 N R 4 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.53436, -90.51439
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.7 US tons
Inventory rating19.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckSteel plate
Main spans1
Design loadH 20
Structure length35 ft (10.7 m)
Longest span32 ft (9.8 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic124 (2023)
Projected traffic167 by 2043
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$311,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Antire RD over Williams CR built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2014.

What condition is Antire RD over Williams 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 Antire RD over Williams CR carry?

About 124 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Antire RD over Williams CR?

The structure is 35 ft (10.7 m) long with a longest span of 32 ft (9.8 m) and a deck 12 ft wide.

Who owns Antire RD over Williams CR?

It is owned by the City or Municipal Highway Agency.