US Bridges

Sycamore Lane over Bear Crk

Good

Jefferson County, Missouri · S 35 T 43 N R 4 E · Structure no. 36835

Built
2022
3 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
300
2023 count
Owner
County
County Highway Agency

About this bridge

Sycamore Lane over Bear Crk is a prestressed concrete box beam or girders - single or spread carrying Sycamore Lane over Bear Crk in Jefferson County, Missouri. It was built in 2022, so it is 3 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 300 vehicles a day, roughly 1% of them trucks, projected to reach 510 by 2043. The structure is 69 ft (20.9 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSycamore Lane
CrossesBear Crk
LocationS 35 T 43 N R 4 E
RouteCounty Highway 430
Coordinates38.42556, -90.54806
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating54.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length69 ft (20.9 m)
Longest span64 ft (19.5 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2023)
Projected traffic510 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Sycamore Lane over Bear Crk built?

It was built in 2022, making it 3 years old in 2025.

What condition is Sycamore Lane over Bear Crk in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Sycamore Lane over Bear Crk carry?

About 300 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Sycamore Lane over Bear Crk?

The structure is 69 ft (20.9 m) long with a longest span of 64 ft (19.5 m) and a deck 27 ft wide.

Who owns Sycamore Lane over Bear Crk?

It is owned by the County Highway Agency.