US Bridges

IH 45 SB over IH 69 NB Rp G City ST

Fair

Harris County, Texas · IH 45/IH 69 Interchange · Structure no. 121020002713225

Built
1972
53 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,616 ft
3 main spans
Daily traffic
47,212
2024 count
Owner
State
State Highway Agency

About this bridge

IH 45 SB over IH 69 NB Rp G City ST is a steel continuous stringer/multi-beam or girder carrying IH 45 SB over IH 69 NB Rp G City ST in Harris County, Texas. It was built in 1972, so it is 53 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 5 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 47,212 vehicles a day, roughly 8% of them trucks, projected to reach 27,140 by 2033. The structure is 1,616 ft (492.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIH 45 SB
CrossesIH 69 NB Rp G City ST
LocationIH 45/IH 69 Interchange
RouteU.S. Route 59
CountyHarris County
StateTexas
Coordinates29.74396, -95.36231
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+17 approach)
Design loadHS 20
Structure length1,616 ft (492.6 m)
Longest span159 ft (48.5 m)
Deck width26 ft (7.8 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic47,212 (2024)
Projected traffic27,140 by 2033
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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$929,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 45 SB over IH 69 NB Rp G City ST built?

It was built in 1972, making it 53 years old in 2025.

What condition is IH 45 SB over IH 69 NB Rp G 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 2024.

How much traffic does IH 45 SB over IH 69 NB Rp G City ST carry?

About 47,212 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is IH 45 SB over IH 69 NB Rp G City ST?

The structure is 1,616 ft (492.6 m) long with a longest span of 159 ft (48.5 m) and a deck 26 ft wide.

Who owns IH 45 SB over IH 69 NB Rp G City ST?

It is owned by the State Highway Agency.