US Bridges

Lp 336 over Silverdale Crk

Fair

Montgomery County, Texas · 0.20 MI E of IH 45 · Structure no. 121700033811117

Built
1988
37 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
17,015
2016 count
Owner
State
State Highway Agency

About this bridge

Lp 336 over Silverdale Crk is a concrete culvert carrying Lp 336 over Silverdale Crk in Montgomery County, Texas. It was built in 1988, so it is 37 years old, younger than the Texas average of 44.4 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 17,015 vehicles a day, roughly 13% of them trucks, projected to reach 29,550 by 2033. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLp 336
CrossesSilverdale Crk
Location0.20 MI E of IH 45
RouteState Highway 336
CountyMontgomery County
StateTexas
Coordinates30.28169, -95.45316
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,015 (2016)
Projected traffic29,550 by 2033
Trucks13%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Lp 336 over Silverdale Crk built?

It was built in 1988, making it 37 years old in 2025.

What condition is Lp 336 over Silverdale Crk 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 Lp 336 over Silverdale Crk carry?

About 17,015 vehicles per day (2016 count), of which roughly 13% are trucks.

How long is Lp 336 over Silverdale Crk?

The structure is 32 ft (9.8 m) long with a longest span of 9 ft (2.7 m).

Who owns Lp 336 over Silverdale Crk?

It is owned by the State Highway Agency.