US Bridges

IH 45 Sb/ IH 69 NB over IH 69 SB & Misc ST

Fair

Harris County, Texas · IH 45/IH 69 Interchange · Structure no. 121020050003227

Built
1972
53 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,148 ft
4 main spans
Daily traffic
21,580
2013 count
Owner
State
State Highway Agency

About this bridge

IH 45 Sb/ IH 69 NB over IH 69 SB & Misc ST is a steel continuous stringer/multi-beam or girder carrying IH 45 Sb/ IH 69 NB over IH 69 SB & Misc 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 21,580 vehicles a day, roughly 7% of them trucks, projected to reach 30,220 by 2033. The structure is 2,148 ft (654.7 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIH 45 Sb/ IH 69 NB
CrossesIH 69 SB & Misc ST
LocationIH 45/IH 69 Interchange
RouteInterstate 45
CountyHarris County
StateTexas
Coordinates29.74498, -95.36249
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.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+25 approach)
Design loadHS 20
Structure length2,148 ft (654.7 m)
Longest span124 ft (37.8 m)
Deck width25 ft (7.7 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deck15 ft (4.7 m)

Traffic and service

Average daily traffic21,580 (2013)
Projected traffic30,220 by 2033
Trucks7%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$113,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 45 Sb/ IH 69 NB over IH 69 SB & Misc ST built?

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

What condition is IH 45 Sb/ IH 69 NB over IH 69 SB & Misc 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/ IH 69 NB over IH 69 SB & Misc ST carry?

About 21,580 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is IH 45 Sb/ IH 69 NB over IH 69 SB & Misc ST?

The structure is 2,148 ft (654.7 m) long with a longest span of 124 ft (37.8 m) and a deck 25 ft wide.

Who owns IH 45 Sb/ IH 69 NB over IH 69 SB & Misc ST?

It is owned by the State Highway Agency.