US Bridges

County RD SW 76 over Baker Br

PoorClosed to traffic

St. Clair County, Missouri · S 35 T 38 N R 28 W · Structure no. 20215

Built
1930
95 years old
Condition
Poor
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

County RD SW 76 over Baker Br is a steel stringer/multi-beam or girder carrying County RD SW 76 over Baker Br 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 2 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: closed to all traffic.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 24 by 2043. The structure is 32 ft (9.8 m) long and 14 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty RD SW 76
CrossesBaker Br
LocationS 35 T 38 N R 28 W
RouteCounty Highway 251
CountySt. Clair County
StateMissouri
Coordinates38.0178, -93.96849
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourScour critical; extensive scour has occurred
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (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 closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County RD SW 76 over Baker Br built?

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

What condition is County RD SW 76 over Baker Br 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 SW 76 over Baker Br carry?

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

How long is County RD SW 76 over Baker Br?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 14 ft wide.

Who owns County RD SW 76 over Baker Br?

It is owned by the County Highway Agency.