US Bridges

IH 610 NB Off Ramp over IH 610 NB on Ramp

Fair

Harris County, Texas · 2.90 MI S of IH 10 · Structure no. 121020027115436

Built
1974
51 years old
Condition
Fair
inspected August 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
252 ft
3 main spans
Daily traffic
995
2024 count
Owner
State
State Highway Agency

About this bridge

IH 610 NB Off Ramp over IH 610 NB on Ramp is a prestressed concrete stringer/multi-beam or girder carrying IH 610 NB Off Ramp over IH 610 NB on Ramp in Harris County, Texas. It was built in 1974, so it is 51 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.

It carries about 995 vehicles a day, roughly 8% of them trucks, projected to reach 19,180 by 2033. The structure is 252 ft (76.8 m) long and 22 ft wide.

Location

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CarriesIH 610 NB Off Ramp
CrossesIH 610 NB on Ramp
Location2.90 MI S of IH 10
RouteInterstate 610
CountyHarris County
StateTexas
Coordinates29.73311, -95.26555
Functional classUrban Principal Arterial - Interstate

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 inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span84 ft (25.6 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic995 (2024)
Projected traffic19,180 by 2033
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$130,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 610 NB Off Ramp over IH 610 NB on Ramp built?

It was built in 1974, making it 51 years old in 2025.

What condition is IH 610 NB Off Ramp over IH 610 NB on Ramp 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 August 2022.

How much traffic does IH 610 NB Off Ramp over IH 610 NB on Ramp carry?

About 995 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is IH 610 NB Off Ramp over IH 610 NB on Ramp?

The structure is 252 ft (76.8 m) long with a longest span of 84 ft (25.6 m) and a deck 22 ft wide.

Who owns IH 610 NB Off Ramp over IH 610 NB on Ramp?

It is owned by the State Highway Agency.