US Bridges

14th ST over UP & Trra RR

FairPosted for load

St. Louis city, Missouri · S 23 T 45 N R 7 E · Structure no. 13135

Built
1981
44 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,142 ft
3 main spans
Daily traffic
11,400
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

14th ST over UP & Trra RR is a steel stringer/multi-beam or girder carrying 14th ST over UP & Trra RR in St. Louis city, Missouri. It was built in 1981, so it is 44 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 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 11,400 vehicles a day, roughly 5% of them trucks, projected to reach 15,390 by 2043. The structure is 1,142 ft (348.1 m) long and 68 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
Carries14th ST
CrossesUP & Trra RR
LocationS 23 T 45 N R 7 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.62268, -90.20324
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating41.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+11 approach)
Design loadHS 20 + Mod
Structure length1,142 ft (348.1 m)
Longest span115 ft (35.1 m)
Deck width68 ft (20.7 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic11,400 (2023)
Projected traffic15,390 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 14th ST over UP & Trra RR built?

It was built in 1981, making it 44 years old in 2025.

What condition is 14th ST over UP & Trra 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 March 2023.

How much traffic does 14th ST over UP & Trra RR carry?

About 11,400 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 14th ST over UP & Trra RR?

The structure is 1,142 ft (348.1 m) long with a longest span of 115 ft (35.1 m) and a deck 68 ft wide.

Who owns 14th ST over UP & Trra RR?

It is owned by the City or Municipal Highway Agency.