US Bridges

IH 35 Nbfr over Drainage Ditch

Fair

Webb County, Texas · 0.65 MI N of US 59 · Structure no. 222400001806077

Built
1962
63 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
46 ft
3 main spans
Daily traffic
13,644
2023 count
Owner
State
State Highway Agency

About this bridge

IH 35 Nbfr over Drainage Ditch is a concrete culvert carrying IH 35 Nbfr over Drainage Ditch in Webb County, Texas. It was built in 1962, so it is 63 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 13,644 vehicles a day, roughly 23% of them trucks, projected to reach 19,108 by 2042. The structure is 46 ft (14 m) long and 57 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIH 35 Nbfr
CrossesDrainage Ditch
Location0.65 MI N of US 59
RouteInterstate 35
CountyWebb County
StateTexas
Coordinates27.54044, -99.50241
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length46 ft (14 m)
Longest span10 ft (3 m)
Deck width57 ft (17.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,644 (2023)
Projected traffic19,108 by 2042
Trucks23%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 35 Nbfr over Drainage Ditch built?

It was built in 1962, making it 63 years old in 2025.

What condition is IH 35 Nbfr over Drainage Ditch 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 October 2024.

How much traffic does IH 35 Nbfr over Drainage Ditch carry?

About 13,644 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is IH 35 Nbfr over Drainage Ditch?

The structure is 46 ft (14 m) long with a longest span of 10 ft (3 m) and a deck 57 ft wide.

Who owns IH 35 Nbfr over Drainage Ditch?

It is owned by the State Highway Agency.