US Bridges

Conrad Smith DR E over Dulin CR

Fair

Jefferson County, Missouri · S 4 T 42 N R 4 W · Structure no. 34619

Built
2014
11 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
1,174
2024 count
Owner
State
State Highway Agency

About this bridge

Conrad Smith DR E over Dulin CR is a prestressed concrete continuous tee beam carrying Conrad Smith DR E over Dulin CR in Jefferson County, Missouri. It was built in 2014, so it is 11 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 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 1,174 vehicles a day, roughly 10% of them trucks, projected to reach 2,113 by 2044. The structure is 83 ft (25.3 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesConrad Smith DR E
CrossesDulin CR
LocationS 4 T 42 N R 4 W
RouteCity Street 0
CountyJefferson County
StateMissouri
Coordinates38.40462, -90.58563
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating68.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length83 ft (25.3 m)
Longest span36 ft (11 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,174 (2024)
Projected traffic2,113 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Conrad Smith DR E over Dulin CR built?

It was built in 2014, making it 11 years old in 2025.

What condition is Conrad Smith DR E over Dulin 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 Conrad Smith DR E over Dulin CR carry?

About 1,174 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Conrad Smith DR E over Dulin CR?

The structure is 83 ft (25.3 m) long with a longest span of 36 ft (11 m) and a deck 31 ft wide.

Who owns Conrad Smith DR E over Dulin CR?

It is owned by the State Highway Agency.