US Bridges

Salisbury ST over Mississippi Rvr

Fair

St. Louis city, Missouri · S 1005 T 45 N R 7 E · Structure no. 32776

Built
1910
115 years old, rebuilt 2005
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel Continuous
Length
5,733 ft
3 main spans
Daily traffic
10,000
2023 count
Owner
State
State Highway Agency

About this bridge

Salisbury ST over Mississippi Rvr is a steel continuous truss - thru carrying Salisbury ST over Mississippi Rvr in St. Louis city, Missouri. It was built in 1910 and reconstructed in 2005, so it is 115 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.

It carries about 10,000 vehicles a day, roughly 10% of them trucks, projected to reach 13,500 by 2043. The structure is 5,733 ft (1,747.5 m) long and 47 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesSalisbury ST
CrossesMississippi Rvr
LocationS 1005 T 45 N R 7 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.66483, -90.18619
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+31 approach)
Design loadHS 20
Structure length5,733 ft (1,747.5 m)
Longest span517 ft (157.7 m)
Deck width47 ft (14.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck19 ft (5.8 m)

Traffic and service

Average daily traffic10,000 (2023)
Projected traffic13,500 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$200.6 million (2025 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Salisbury ST over Mississippi Rvr built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 2005.

What condition is Salisbury ST over Mississippi Rvr 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 September 2023.

How much traffic does Salisbury ST over Mississippi Rvr carry?

About 10,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Salisbury ST over Mississippi Rvr?

The structure is 5,733 ft (1,747.5 m) long with a longest span of 517 ft (157.7 m) and a deck 47 ft wide.

Who owns Salisbury ST over Mississippi Rvr?

It is owned by the State Highway Agency.