US Bridges

US 59 SB Off-Ramp over Chimney Rock RD

Fair

Harris County, Texas · 1.00 MI W of IH 610 W · Structure no. 121020002713213

Built
1993
32 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,158 ft
3 main spans
Daily traffic
29,390
2011 count
Owner
State
State Highway Agency

About this bridge

US 59 SB Off-Ramp over Chimney Rock RD is a steel continuous stringer/multi-beam or girder carrying US 59 SB Off-Ramp over Chimney Rock RD in Harris County, Texas. It was built in 1993, so it is 32 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 29,390 vehicles a day, roughly 6% of them trucks, projected to reach 41,150 by 2031. The structure is 1,158 ft (353 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 59 SB Off-Ramp
CrossesChimney Rock RD
Location1.00 MI W of IH 610 W
RouteU.S. Route 59
CountyHarris County
StateTexas
Coordinates29.72618, -95.47884
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+8 approach)
Design loadHS 20
Structure length1,158 ft (353 m)
Longest span159 ft (48.5 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,390 (2011)
Projected traffic41,150 by 2031
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkNon-Interstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 59 SB Off-Ramp over Chimney Rock RD built?

It was built in 1993, making it 32 years old in 2025.

What condition is US 59 SB Off-Ramp over Chimney Rock RD 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 September 2024.

How much traffic does US 59 SB Off-Ramp over Chimney Rock RD carry?

About 29,390 vehicles per day (2011 count), of which roughly 6% are trucks.

How long is US 59 SB Off-Ramp over Chimney Rock RD?

The structure is 1,158 ft (353 m) long with a longest span of 159 ft (48.5 m) and a deck 27 ft wide.

Who owns US 59 SB Off-Ramp over Chimney Rock RD?

It is owned by the State Highway Agency.