US Bridges

Allen RD over UP RR

Good

St. Louis County, Missouri · S 30 T 44 N R 4 E · Structure no. 35884

Built
2019
6 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
91 ft
1 main span
Daily traffic
369
2023 count
Owner
County
County Highway Agency

About this bridge

Allen RD over UP RR is a prestressed concrete tee beam carrying Allen RD over UP RR in St. Louis County, Missouri. It was built in 2019, so it is 6 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 369 vehicles a day, roughly 6% of them trucks, projected to reach 498 by 2043. The structure is 91 ft (27.8 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesAllen RD
CrossesUP RR
LocationS 30 T 44 N R 4 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.52361, -90.61186
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.4 US tons
Inventory rating54.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length91 ft (27.8 m)
Longest span87 ft (26.5 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic369 (2023)
Projected traffic498 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Allen RD over UP RR built?

It was built in 2019, making it 6 years old in 2025.

What condition is Allen RD over UP RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does Allen RD over UP RR carry?

About 369 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Allen RD over UP RR?

The structure is 91 ft (27.8 m) long with a longest span of 87 ft (26.5 m) and a deck 39 ft wide.

Who owns Allen RD over UP RR?

It is owned by the County Highway Agency.