US Bridges

Mo 77 S over UP RR

Fair

Scott County, Missouri · S 7 T 28 N R 13 E · Structure no. 5572

Built
1933
92 years old, rebuilt 2022
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete
Length
183 ft
5 main spans
Daily traffic
3,267
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 77 S over UP RR is a concrete tee beam carrying Mo 77 S over UP RR in Scott County, Missouri. It was built in 1933 and reconstructed in 2022, so it is 92 years old, older 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 3,267 vehicles a day, roughly 6% of them trucks, projected to reach 4,737 by 2044. The structure is 183 ft (55.8 m) long and 27 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesMo 77 S
CrossesUP RR
LocationS 7 T 28 N R 13 E
RouteState Highway 77
CountyScott County
StateMissouri
Coordinates37.10198, -89.66565
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating28.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length183 ft (55.8 m)
Longest span52 ft (15.9 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,267 (2024)
Projected traffic4,737 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed26.7 mi (43 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 77 S over UP RR built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 2022.

What condition is Mo 77 S 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 February 2025.

How much traffic does Mo 77 S over UP RR carry?

About 3,267 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Mo 77 S over UP RR?

The structure is 183 ft (55.8 m) long with a longest span of 52 ft (15.9 m) and a deck 27 ft wide.

Who owns Mo 77 S over UP RR?

It is owned by the State Highway Agency.