US Bridges

Mo 8 E over UP RR

Poor

Washington County, Missouri · S 21 T 37 N R 3 E · Structure no. 1681

Built
1968
57 years old, rebuilt 2024
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
183 ft
3 main spans
Daily traffic
6,462
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 Washington County, Missouri. It was built in 1968 and reconstructed in 2024, so it is 57 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,462 vehicles a day, roughly 12% of them trucks, projected to reach 12,278 by 2044. The structure is 183 ft (55.8 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMo 8 E
CrossesUP RR
LocationS 21 T 37 N R 3 E
RouteState Highway 8
CountyWashington County
StateMissouri
Coordinates37.91147, -90.70696
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating33.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length183 ft (55.8 m)
Longest span70 ft (21.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,462 (2024)
Projected traffic12,278 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 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 1968, making it 57 years old in 2025. It was reconstructed in 2024.

What condition is Mo 8 E over UP RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

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

About 6,462 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Mo 8 E over UP RR?

The structure is 183 ft (55.8 m) long with a longest span of 70 ft (21.3 m) and a deck 43 ft wide.

Who owns Mo 8 E over UP RR?

It is owned by the State Highway Agency.