US Bridges

US 59 Nb/Ih 610 EB over US 59 Ent. Rp-D

Good

Harris County, Texas · 0.40 MI S of IH610 · Structure no. 121020017711258

Built
1997
28 years old
Condition
Good
inspected September 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
568 ft
2 main spans
Daily traffic
15,250
2013 count
Owner
State
State Highway Agency

About this bridge

US 59 Nb/Ih 610 EB over US 59 Ent. Rp-D is a prestressed concrete stringer/multi-beam or girder carrying US 59 Nb/Ih 610 EB over US 59 Ent. Rp-D in Harris County, Texas. It was built in 1997, so it is 28 years old, younger than the Texas average of 44.4 years.

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

It carries about 15,250 vehicles a day, roughly 7% of them trucks, projected to reach 21,350 by 2033. The structure is 568 ft (173.1 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS 59 Nb/Ih 610 EB
CrossesUS 59 Ent. Rp-D
Location0.40 MI S of IH610
RouteU.S. Route 59
CountyHarris County
StateTexas
Coordinates29.80695, -95.33605
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+4 approach)
Design loadHS 20
Structure length568 ft (173.1 m)
Longest span125 ft (38.1 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,250 (2013)
Projected traffic21,350 by 2033
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 59 Nb/Ih 610 EB over US 59 Ent. Rp-D built?

It was built in 1997, making it 28 years old in 2025.

What condition is US 59 Nb/Ih 610 EB over US 59 Ent. Rp-D 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 September 2022.

How much traffic does US 59 Nb/Ih 610 EB over US 59 Ent. Rp-D carry?

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

How long is US 59 Nb/Ih 610 EB over US 59 Ent. Rp-D?

The structure is 568 ft (173.1 m) long with a longest span of 125 ft (38.1 m) and a deck 51 ft wide.

Who owns US 59 Nb/Ih 610 EB over US 59 Ent. Rp-D?

It is owned by the State Highway Agency.