US Bridges

Murdoch Ave over BNSF RR

Fair

St. Louis County, Missouri · S 1953 T 45 N R 6 E · Structure no. 33537

Built
2012
13 years old
Condition
Fair
inspected January 2024
Type
Frame
Concrete
Length
46 ft
1 main span
Daily traffic
10,485
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Murdoch Ave over BNSF RR is a concrete frame carrying Murdoch Ave over BNSF RR in St. Louis County, Missouri. It was built in 2012, so it is 13 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 10,485 vehicles a day, roughly 12% of them trucks, projected to reach 14,155 by 2043. The structure is 46 ft (14 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMurdoch Ave
CrossesBNSF RR
LocationS 1953 T 45 N R 6 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.59209, -90.3362
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.4 US tons
Inventory rating43.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span46 ft (14 m)
Deck width62 ft (18.8 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,485 (2023)
Projected traffic14,155 by 2043
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$704,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Murdoch Ave over BNSF RR built?

It was built in 2012, making it 13 years old in 2025.

What condition is Murdoch Ave over BNSF RR 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 Murdoch Ave over BNSF RR carry?

About 10,485 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is Murdoch Ave over BNSF RR?

The structure is 46 ft (14 m) long with a longest span of 46 ft (14 m) and a deck 62 ft wide.

Who owns Murdoch Ave over BNSF RR?

It is owned by the City or Municipal Highway Agency.