US Bridges

Mo 100 E over BNSF RR

Fair

St. Louis city, Missouri · S 17 T 45 N R 7 E · Structure no. 30517

Built
2004
21 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
326 ft
4 main spans
Daily traffic
6,661
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 100 E over BNSF RR is a steel continuous stringer/multi-beam or girder carrying Mo 100 E over BNSF RR in St. Louis city, Missouri. It was built in 2004, so it is 21 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 6,661 vehicles a day, roughly 13% of them trucks, projected to reach 9,325 by 2044. The structure is 326 ft (99.4 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMo 100 E
CrossesBNSF RR
LocationS 17 T 45 N R 7 E
RouteState Highway 100
CountySt. Louis city
StateMissouri
Coordinates38.6278, -90.24532
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.2 US tons
Inventory rating63.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length326 ft (99.4 m)
Longest span73 ft (22.2 m)
Deck width62 ft (18.8 m)
Roadway width56 ft (17.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,661 (2024)
Projected traffic9,325 by 2044
Trucks13%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mo 100 E over BNSF RR built?

It was built in 2004, making it 21 years old in 2025.

What condition is Mo 100 E 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 July 2023.

How much traffic does Mo 100 E over BNSF RR carry?

About 6,661 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mo 100 E over BNSF RR?

The structure is 326 ft (99.4 m) long with a longest span of 73 ft (22.2 m) and a deck 62 ft wide.

Who owns Mo 100 E over BNSF RR?

It is owned by the State Highway Agency.