US Bridges

IH 610 NB S Appr over UPRR Ptra Ramp City ST

Fair

Harris County, Texas · 1.0 MI N of SH 225 · Structure no. 121020027115703

Built
1973
52 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
3,511 ft
8 main spans
Daily traffic
66,868
2020 count
Owner
State
State Highway Agency

About this bridge

IH 610 NB S Appr over UPRR Ptra Ramp City ST is a prestressed concrete stringer/multi-beam or girder carrying IH 610 NB S Appr over UPRR Ptra Ramp City ST in Harris County, Texas. It was built in 1973, so it is 52 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 66,868 vehicles a day, roughly 8% of them trucks, projected to reach 87,640 by 2031. The structure is 3,511 ft (1,070.2 m) long and 77 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesIH 610 NB S Appr
CrossesUPRR Ptra Ramp City ST
Location1.0 MI N of SH 225
RouteInterstate 610
CountyHarris County
StateTexas
Coordinates29.725, -95.26631
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8 (+36 approach)
Design loadHS 20
Structure length3,511 ft (1,070.2 m)
Longest span120 ft (36.6 m)
Deck width77 ft (23.5 m)
Roadway width76 ft (23.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66,868 (2020)
Projected traffic87,640 by 2031
Trucks8%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemYes
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 610 NB S Appr over UPRR Ptra Ramp City ST built?

It was built in 1973, making it 52 years old in 2025.

What condition is IH 610 NB S Appr over UPRR Ptra Ramp City ST 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 December 2022.

How much traffic does IH 610 NB S Appr over UPRR Ptra Ramp City ST carry?

About 66,868 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is IH 610 NB S Appr over UPRR Ptra Ramp City ST?

The structure is 3,511 ft (1,070.2 m) long with a longest span of 120 ft (36.6 m) and a deck 77 ft wide.

Who owns IH 610 NB S Appr over UPRR Ptra Ramp City ST?

It is owned by the State Highway Agency.