US Bridges

Compton Ave over Mo Pac Bn N&w RR

PoorPosted for load

St. Louis city, Missouri · S 363 T 45 N R 7 E · Structure no. 13133

Built
1965
60 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,351 ft
28 main spans
Daily traffic
14,270
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Compton Ave over Mo Pac Bn N&w RR is a steel continuous stringer/multi-beam or girder carrying Compton Ave over Mo Pac Bn N&w RR in St. Louis city, Missouri. It was built in 1965, so it is 60 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 3 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: posted for load restriction.

It carries about 14,270 vehicles a day, roughly 5% of them trucks, projected to reach 19,265 by 2043. The structure is 1,351 ft (411.8 m) long and 55 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCompton Ave
CrossesMo Pac Bn N&w RR
LocationS 363 T 45 N R 7 E
RouteCity Street 0
Coordinates38.62664, -90.22884
Functional classUrban Minor Arterial

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.7 US tons
Inventory rating23.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans28
Design loadHS 20
Structure length1,351 ft (411.8 m)
Longest span56 ft (17.1 m)
Deck width55 ft (16.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,270 (2023)
Projected traffic19,265 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$20.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Compton Ave over Mo Pac Bn N&w RR built?

It was built in 1965, making it 60 years old in 2025.

What condition is Compton Ave over Mo Pac Bn N&w RR 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 March 2024.

How much traffic does Compton Ave over Mo Pac Bn N&w RR carry?

About 14,270 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Compton Ave over Mo Pac Bn N&w RR?

The structure is 1,351 ft (411.8 m) long with a longest span of 56 ft (17.1 m) and a deck 55 ft wide.

Who owns Compton Ave over Mo Pac Bn N&w RR?

It is owned by the City or Municipal Highway Agency.