US Bridges

Mo 8 E over UP RR

Fair

St. Francois County, Missouri · S 3092 T 36 N R 5 E · Structure no. 3636

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
171 ft
5 main spans
Daily traffic
8,300
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 8 E over UP RR is a steel continuous stringer/multi-beam or girder carrying Mo 8 E over UP RR in St. Francois County, Missouri. It was built in 1986, so it is 39 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.

It carries about 8,300 vehicles a day, roughly 12% of them trucks, projected to reach 14,110 by 2044. The structure is 171 ft (52.1 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMo 8 E
CrossesUP RR
LocationS 3092 T 36 N R 5 E
RouteState Highway 8
CountySt. Francois County
StateMissouri
Coordinates37.86325, -90.52263
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
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 rating71.4 US tons
Inventory rating42.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length171 ft (52.1 m)
Longest span57 ft (17.4 m)
Deck width46 ft (13.9 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,300 (2024)
Projected traffic14,110 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 8 E over UP RR built?

It was built in 1986, making it 39 years old in 2025.

What condition is Mo 8 E over UP 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 October 2024.

How much traffic does Mo 8 E over UP RR carry?

About 8,300 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Mo 8 E over UP RR?

The structure is 171 ft (52.1 m) long with a longest span of 57 ft (17.4 m) and a deck 46 ft wide.

Who owns Mo 8 E over UP RR?

It is owned by the State Highway Agency.