US Bridges

Jason ST over Chimney Rock Ditch

FairPosted for load

Harris County, Texas · 0.01 MI E of Chmney Rk SB · Structure no. 121020B34577024

Built
1963
62 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
2,600
2013 count
Owner
City
City or Municipal Highway Agency

About this bridge

Jason ST over Chimney Rock Ditch is a concrete continuous slab carrying Jason ST over Chimney Rock Ditch in Harris County, Texas. It was built in 1963, so it is 62 years old, older 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. Its operating status is: posted for load restriction.

It carries about 2,600 vehicles a day, projected to reach 4,010 by 2033. The structure is 82 ft (25 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesJason ST
CrossesChimney Rock Ditch
Location0.01 MI E of Chmney Rk SB
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.68418, -95.47681
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length82 ft (25 m)
Longest span30 ft (9.1 m)
Deck width41 ft (12.6 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2013)
Projected traffic4,010 by 2033
Trucks0%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$5,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jason ST over Chimney Rock Ditch built?

It was built in 1963, making it 62 years old in 2025.

What condition is Jason ST over Chimney Rock Ditch 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 October 2023.

How much traffic does Jason ST over Chimney Rock Ditch carry?

About 2,600 vehicles per day (2013 count).

How long is Jason ST over Chimney Rock Ditch?

The structure is 82 ft (25 m) long with a longest span of 30 ft (9.1 m) and a deck 41 ft wide.

Who owns Jason ST over Chimney Rock Ditch?

It is owned by the City or Municipal Highway Agency.