US Bridges

CR 99 over Chigger Creek

FairPosted for load

Brazoria County, Texas · 2.5 MI NE of SH 6 · Structure no. 120200AA0690006

Built
2004
21 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
3 main spans
Daily traffic
5,280
2016 count
Owner
County
County Highway Agency

About this bridge

CR 99 over Chigger Creek is a wood or timber stringer/multi-beam or girder carrying CR 99 over Chigger Creek in Brazoria County, Texas. It was built in 2004, so it is 21 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 5,280 vehicles a day, projected to reach 3,000 by 2031. The structure is 40 ft (12.2 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 99
CrossesChigger Creek
Location2.5 MI NE of SH 6
RouteCounty Highway 99
CountyBrazoria County
StateTexas
Coordinates29.47745, -95.29264
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span13 ft (4.1 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,280 (2016)
Projected traffic3,000 by 2031
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$125,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 99 over Chigger Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is CR 99 over Chigger Creek 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 2023.

How much traffic does CR 99 over Chigger Creek carry?

About 5,280 vehicles per day (2016 count).

How long is CR 99 over Chigger Creek?

The structure is 40 ft (12.2 m) long with a longest span of 13 ft (4.1 m) and a deck 30 ft wide.

Who owns CR 99 over Chigger Creek?

It is owned by the County Highway Agency.