US Bridges

Mccasland RD over Gravois CR

Poor

Morgan County, Missouri · S 1 T 41 N R 18 W · Structure no. 15315

Built
1984
41 years old
Condition
Poor
inspected November 2024
Type
Girder and Floorbeam System
Steel
Length
106 ft
2 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Mccasland RD over Gravois CR is a steel girder and floorbeam system carrying Mccasland RD over Gravois CR in Morgan County, Missouri. It was built in 1984, so it is 41 years old, younger 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 4 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 180 by 2043. The structure is 106 ft (32.3 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesMccasland RD
CrossesGravois CR
LocationS 1 T 41 N R 18 W
RouteCounty Highway 90
CountyMorgan County
StateMissouri
Coordinates38.34064, -92.86322
Functional classRural Local

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.5 US tons
Inventory rating30.8 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length106 ft (32.3 m)
Longest span52 ft (15.8 m)
Deck width16 ft (4.8 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic180 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$509,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mccasland RD over Gravois CR built?

It was built in 1984, making it 41 years old in 2025.

What condition is Mccasland RD over Gravois CR 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 November 2024.

How much traffic does Mccasland RD over Gravois CR carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Mccasland RD over Gravois CR?

The structure is 106 ft (32.3 m) long with a longest span of 52 ft (15.8 m) and a deck 16 ft wide.

Who owns Mccasland RD over Gravois CR?

It is owned by the County Highway Agency.