US Bridges

Jefferson ST Exit over Calhoun ST to IH 45 NB

Fair

Harris County, Texas · 0.30 MI S of Allen Pkwy · Structure no. 121020050003068

Built
1955
70 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
152 ft
1 main span
Daily traffic
9,250
2010 count
Owner
State
State Highway Agency

About this bridge

Jefferson ST Exit over Calhoun ST to IH 45 NB is a steel continuous stringer/multi-beam or girder carrying Jefferson ST Exit over Calhoun ST to IH 45 NB in Harris County, Texas. It was built in 1955, so it is 70 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 9,250 vehicles a day, projected to reach 9,250 by 2027. The structure is 152 ft (46.3 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesJefferson ST Exit
CrossesCalhoun ST to IH 45 NB
Location0.30 MI S of Allen Pkwy
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.75386, -95.37442
Functional classUrban Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span69 ft (21 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic9,250 (2010)
Projected traffic9,250 by 2027
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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$11,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Jefferson ST Exit over Calhoun ST to IH 45 NB built?

It was built in 1955, making it 70 years old in 2025.

What condition is Jefferson ST Exit over Calhoun ST to IH 45 NB 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 September 2024.

How much traffic does Jefferson ST Exit over Calhoun ST to IH 45 NB carry?

About 9,250 vehicles per day (2010 count).

How long is Jefferson ST Exit over Calhoun ST to IH 45 NB?

The structure is 152 ft (46.3 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns Jefferson ST Exit over Calhoun ST to IH 45 NB?

It is owned by the State Highway Agency.