US Bridges

US 59 SB Ent Ramp over US 59 SB Exit Ramp W

Fair

Harris County, Texas · 1.18 MI S of IH610 & US59 · Structure no. 121020017711291

Built
1998
27 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
860 ft
8 main spans
Daily traffic
15,250
2013 count
Owner
State
State Highway Agency

About this bridge

US 59 SB Ent Ramp over US 59 SB Exit Ramp W is a prestressed concrete stringer/multi-beam or girder carrying US 59 SB Ent Ramp over US 59 SB Exit Ramp W in Harris County, Texas. It was built in 1998, so it is 27 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 15,250 vehicles a day, roughly 7% of them trucks, projected to reach 21,350 by 2033. The structure is 860 ft (262.1 m) long and 29 ft wide.

CarriesUS 59 SB Ent Ramp
CrossesUS 59 SB Exit Ramp W
Location1.18 MI S of IH610 & US59
RouteU.S. Route 59
StateTexas
Coordinates29.78907, -95.34023
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length860 ft (262.1 m)
Longest span118 ft (36 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,250 (2013)
Projected traffic21,350 by 2033
Trucks7%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 Ent Ramp over US 59 SB Exit Ramp W built?

It was built in 1998, making it 27 years old in 2025.

What condition is US 59 SB Ent Ramp over US 59 SB Exit Ramp W 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 2024.

How much traffic does US 59 SB Ent Ramp over US 59 SB Exit Ramp W carry?

About 15,250 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is US 59 SB Ent Ramp over US 59 SB Exit Ramp W?

The structure is 860 ft (262.1 m) long with a longest span of 118 ft (36 m) and a deck 29 ft wide.

Who owns US 59 SB Ent Ramp over US 59 SB Exit Ramp W?

It is owned by the State Highway Agency.