US Bridges

Mo 30 W over Skullbone CR

Fair

Jefferson County, Missouri · S 897 T 42 N R 3 E · Structure no. 2667

Built
1974
51 years old, rebuilt 2005
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
202 ft
3 main spans
Daily traffic
6,711
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 30 W over Skullbone CR is a steel continuous stringer/multi-beam or girder carrying Mo 30 W over Skullbone CR in Jefferson County, Missouri. It was built in 1974 and reconstructed in 2005, so it is 51 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 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 6,711 vehicles a day, roughly 5% of them trucks, projected to reach 11,409 by 2044. The structure is 202 ft (61.6 m) long and 47 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesMo 30 W
CrossesSkullbone CR
LocationS 897 T 42 N R 3 E
RouteState Highway 30
CountyJefferson County
StateMissouri
Coordinates38.34334, -90.65216
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span78 ft (23.8 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,711 (2024)
Projected traffic11,409 by 2044
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 30 W over Skullbone CR built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2005.

What condition is Mo 30 W over Skullbone CR 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 December 2024.

How much traffic does Mo 30 W over Skullbone CR carry?

About 6,711 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mo 30 W over Skullbone CR?

The structure is 202 ft (61.6 m) long with a longest span of 78 ft (23.8 m) and a deck 47 ft wide.

Who owns Mo 30 W over Skullbone CR?

It is owned by the State Highway Agency.